3. If 720. 0 g of steam at 400. 0 °C absorbs 800. 0 kJ of heat energy, what will be its increase in


temperature? (Cp of steam = 1. 7 J/g °C)

Answers

Answer 1

The increase in temperature of the steam if it absorbs 800 kJ of heat energy is 653.6°C

How to calculate increase in temperature?

The specific heat capacity is the amount of thermal energy required to raise the temperature of a system by one temperature unit. The increase in temperature of a metal can be calculated using the following expression;

Q = mc∆T

Where;

Q = quantity of heat absorbed or releasedm = massc = specific heat capacity∆T = change in temperature

800,000 = 720 × 1.7 × ∆T

800000 = 1,224∆T

∆T = 653.6°C

Learn more about change in temperature at: https://brainly.com/question/11477213

#SPJ1


Related Questions

do avalanchers play a large part in shaping the Earth's surface?

Answers

Answer:

yes

Explanation:

yes, avalanches a big part in the shaping of the earths surface.

Yes, avalanches can play a significant role in shaping the Earth's surface, particularly in mountainous areas.


The movements of snow, ice, and debris down a slope known as avalanches can significantly impact the Earth's surface, especially in mountainous regions. These natural occurrences can cause various landscape changes, erosion, and deposition.

An unknown gas with a mass of 205 g occupies a volume of 20. 0 L at 273 K and 1. 00 atm. What is the molar mass of this compound?

Answers

The molar mass of the unknown gas is approximately 221.6 g/mol.

To find the molar mass of the unknown gas, we can use the ideal gas law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the given values to their appropriate units:

mass (m) = 205 g

volume (V) = 20.0 L

pressure (P) = 1.00 atm

temperature (T) = 273 K

Next, we can rearrange the ideal gas law equation to solve for the number of moles:

n = PV / RT

Substituting the given values, we get:

n = (1.00 atm) x (20.0 L) / [(0.08206 L atm/mol K) x (273 K)]

n = 0.926 mol

Now we can calculate the molar mass of the unknown gas by dividing its mass by the number of moles:

molar mass = mass / n

molar mass = 205 g / 0.926 mol

molar mass = 221.6 g/mol

To know more about molar mass refer to-

https://brainly.com/question/22997914

#SPJ11

How many grams of steam are produced when 675 grams of oxygen gas combust?

2c8h18 (1) + 2502 (g) --> 16co2 (g) + 18h20 (g) (balanced)

Answers

Based on the balanced chemical equation provided, the combustion of 675 grams of oxygen gas (O₂) will produce 275.1 grams of water (H₂O) in the form of steam. Therefore, 275.1 grams of steam are produced when 675 grams of oxygen gas combust.

To determine how many grams of steam are produced when 675 grams of oxygen gas combust, we'll use the balanced equation you provided: 2C₈H₁₈ (l) + 25O₂ (g) --> 16CO₂ (g) + 18H₂O (g).

Step 1: Calculate the molar mass of O₂ and H₂O.
O₂: 16.00 g/mol * 2 = 32.00 g/mol
H₂O: (1.01 g/mol * 2) + 16.00 g/mol = 18.02 g/mol

Step 2: Calculate the moles of oxygen (O₂) in the 675 grams of oxygen gas.
moles of O₂ = 675 g / 32.00 g/mol = 21.09375 mol

Step 3: Use the stoichiometry from the balanced equation to find the moles of H₂O (steam) produced.
(18 mol H₂O / 25 mol O2) * 21.09375 mol O₂ = 15.271125 mol H2O

Step 4: Convert moles of H₂O to grams.
grams of H₂O = 15.271125 mol * 18.02 g/mol = 275.097895 g

So, approximately 275.1 grams of steam are produced when 675 grams of oxygen gas combust.

Learn more about combustion at https://brainly.com/question/23992512

#SPJ11

A student made the claim that a 4 gram paintball fired from a paintball gun at 90 m/s could have about the same kinetic energy as a 1 gram bb pellet fired from a bb gun at 180 m/s do you agree or disagree with the student's claim?

Answers

I agree with the student's claim that a 4-gram paintball fired from a paintball gun at 90 m/s could have about the same kinetic energy as a 1-gram bb pellet fired from a bb gun at 180 m/s.

To answer this question, we need to compare the kinetic energy of the paintball and the bb pellet. The formula for kinetic energy is 1/2mv^2, where m is the mass of the object and v is its velocity.

For the paintball, with a mass of 4 grams and a velocity of 90 m/s, the kinetic energy is:

1/2 * 0.004 kg * (90 m/s)^2 = 18.18 joules

For the bb pellet, with a mass of 1 gram and a velocity of 180 m/s, the kinetic energy is:

1/2 * 0.001 kg * (180 m/s)^2 = 16.2 joules

So, the student's claim is actually true - the 4-gram paintball fired at 90 m/s has slightly more kinetic energy than the 1-gram bb pellet fired at 180 m/s. However, it's worth noting that the two projectiles have different sizes and shapes, and would behave differently upon impact.

Learn more about kinetic energy at https://brainly.com/question/8101588

#SPJ11

What is the molarity of a solution made by dissolving 2. 0 mol of solute in 6. 0 L of solvent?

Answers

The molarity of the solution is 0.33 M.

To calculate the molarity, you need to divide the moles of solute by the volume of the solvent in liters. In this case, you have 2.0 moles of solute and 6.0 liters of solvent. Using the formula M = moles/volume, you can find the molarity of the solution:

M = (2.0 moles) / (6.0 L)
M = 0.33 M

This means that the concentration of the solute in the solution is 0.33 moles per liter. Molarity is an important concept in chemistry as it helps in determining the concentration of a particular substance in a solution and is useful in various calculations and reactions.

To know more about moles  click on below link:

https://brainly.com/question/26416088#

#SPJ11

using wedge-dash notation to designate stereochemistry, draw (r)-3-aminobutan-1-ol.

Answers

To draw (R)-3-aminobutan-1-ol using wedge-dash notation, follow these steps: 1. Draw a four-carbon chain representing butan-1-ol. 2. Add an -OH group to the first carbon. 3. Add an -NH2 group to the third carbon.

To draw (R)-3-aminobutan-1-ol using wedge-dash notation to designate stereochemistry, we first need to determine the absolute configuration of the molecule. The priority of the substituents attached to the chiral center (the carbon with four different groups attached) must be determined according to the Cahn-Ingold-Prelog (CIP) rules. The highest priority group is given a number 1, the second-highest priority group is given a number 2, and so on. For (R)-3-aminobutan-1-ol, the substituents attached to the chiral center are: - NH2 (amino group) - highest priority - OH (hydroxy group) - second-highest priority - CH3 (methyl group) - third-highest priority - H (hydrogen) - lowest priority To determine the absolute configuration, we need to look at the orientation of the substituents in three-dimensional space. If the lowest priority group is pointing away from us (into the page), we use the right-hand rule to determine the orientation of the remaining three groups. If the sequence of priorities goes clockwise, the configuration is (R); if it goes counterclockwise, the configuration is (S). In the case of (R)-3-aminobutan-1-ol, we can assign the following orientations: - NH2 (highest priority) - wedge - OH - dash - CH3 - wedge - H (lowest priority) - into the page Based on this, we can see that the sequence of priorities goes clockwise, indicating that the configuration is (R). Therefore, the wedge-dash notation for (R)-3-aminobutan-1-ol is: H NH2 | | C---C | | CH3 OH The NH2 and CH3 groups are represented by wedges, indicating that they are coming out of the page towards the viewer. The OH group is represented by a dash, indicating that it is going into the page away from the viewer. The H group is represented by a thin line, indicating that it is behind the plane of the paper.

Visit to know more about wedge dadhdash notation:-

https://brainly.com/question/30478936

#SPJ11

H2 + Br2 → 2HBr. How many liters of hydrogen gas are needed to react with 9.0 g of bromine?

Answers

We need 1.26 liters of hydrogen gas to react with 9.0 g of bromine.

To solve this problem, we need to use the balanced chemical equation for the reaction between hydrogen gas (H₂) and bromine (Br₂):

[tex]H_2 + Br_2 - > 2HBr[/tex]

According to the stoichiometry of this equation, one mole of Br₂ reacts with one mole of H₂ to produce two moles of HBr. Therefore, we need to determine the number of moles of Br₂ in 9.0 g, and then use the mole ratio to find the number of moles of H₂ required.

Finally, we can convert the number of moles of H₂ to liters using the ideal gas law.

First, we need to calculate the number of moles of Br₂ in 9.0 g:

The molar mass of Br₂ is 2(79.90 g/mol) = 159.80 g/mol

The number of moles of Br₂ in 9.0 g is:

9.0 g / 159.80 g/mol = 0.0563 mol Br₂

Next, we use the mole ratio from the balanced equation to find the number of moles of H₂ required:

According to the balanced equation, one mole of Br₂ reacts with one mole of H₂, so we need 0.0563 moles of H₂.

Finally, we can use the ideal gas law to convert the number of moles of H₂ to liters:

The ideal gas law is PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

We can assume standard temperature and pressure (STP), which is 0°C (273.15 K) and 1 atm.

At STP, one mole of an ideal gas occupies 22.4 L.

Therefore, the volume of H2 required is:

V = (0.0563 mol) x (22.4 L/mol) = 1.26 L

Therefore, we need 1.26 liters of hydrogen gas to react with 9.0 g of bromine.

learn more about temperature here

https://brainly.com/question/26866637

#SPJ1

At constant temperature and pressure, a system is most likely to undergo a reaction so that in its final state, as compared to its initial state, the system has:


A) lower energy and higher entropy


B) lower energy and lower entropy


C) higher energy and lower entropy


D) higher energy and higher entropy

Answers

In general, a system tends to favor a reaction that results in an increase in entropy, which is a measure of the number of possible arrangements of the system's particles. The answer is A) lower energy and higher entropy.

This is due to the fact that the increase in the number of particles in the system or the increase in the number of ways the particles can be arranged leads to an increase in entropy. On the other hand, a system also tends to favor a reaction that results in a decrease in energy, which is a measure of the system's ability to do work.

Therefore, when a system undergoes a reaction that decreases its energy while increasing its entropy, it is moving towards a more stable and disordered state.

This is because a lower energy state means that the system is releasing energy, while a higher entropy state means that the system is becoming more disordered and spread out. This tendency towards lower energy and higher entropy is known as the second law of thermodynamics, which governs the behavior of all physical systems.

The answer is A) lower energy and higher entropy.

To know more about entropy refer to-

https://brainly.com/question/13135498

#SPJ11

1. How many liters of water will be produced if you have 17. 43 grams of ammonia (NH3)? *


(8 Points)


4 NH3 + 502 --> 4 NO + 6H2O


Enter your math answer

Answers

17.43 grams of NH₃ will produce 34.39 liters of water.

The balanced chemical equation is 4 NH₃ + 5O₂ → 4NO + 6H₂O. From the equation, we can see that for every 4 moles of NH₃ reacted, 6 moles of water are produced.

Therefore, to determine the number of moles of water produced, we need to convert the mass of NH₃ given to moles. The molar mass of NH₃ is 17.03 g/mol, so:

17.43 g NH₃ × (1 mol NH₃/17.03 g NH₃) = 1.023 mol NH₃

Using stoichiometry, we can calculate the number of moles of water produced:

1.023 mol NH₃ × (6 mol H₂O/4 mol NH₃) = 1.5345 mol H₂O

Finally, we can convert the number of moles of water to liters using the fact that 1 mole of any gas at standard temperature and pressure (STP) occupies 22.4 L:

1.5345 mol H₂O × (22.4 L/mol) = 34.39 L


To know more about chemical equation, refer here:

https://brainly.com/question/19626681#

#SPJ11

2. Dragonflies can travel at speeds up to 35 miles perhour. How many meters per second is that? (1 mile = 1609 meters)


3. The Hyperion is the tallest redwood tree in the worldat 379. 7 feet. How many centimeters is that? (1 inch = 2. 54 cm)


4. How many atoms are in 2. 35 moles sulfur?


5. How many molecules are in 3. 45 moles sucrose?


Pls Help ASAP!

Answers

2. To convert miles per hour to meters per second, we need to divide by 2.237.

Thus, 35 miles per hour is equal to (35/2.237) meters per second.

Simplifying, we get:

= 15.646 m/s

3. To convert feet to centimeters, we need to multiply by 30.48.

Thus, 379.7 feet is equal to (379.7 x 30.48) centimeters.

Simplifying, we get:

= 1158.754 centimeters

4. To calculate the number of atoms in 2.35 moles of sulfur, we need to use Avogadro's number, which is 6.022 x 10^23 atoms per mole.

Therefore, the number of atoms in 2.35 moles of sulfur is:

2.35 moles x 6.022 x 10^23 atoms/mole = 1.41 x 10^24 atoms

5. To calculate the number of molecules in 3.45 moles of sucrose, we need to use Avogadro's number, which is 6.022 x 10^23 molecules per mole.

Therefore, the number of molecules in 3.45 moles of sucrose is:

3.45 moles x 6.022 x 10^23 molecules/mole = 2.08 x 10^24 molecules

to know more about Avogadro's number refer here:

https://brainly.com/question/28812626#

#SPJ11

What mass in grams of sucrose must be dissolved in 2000 grams of water to make a 0. 1m solution?

Answers

We need to dissolve 6.85 grams of sucrose in 2000 grams of water to make a 0.1 M solution.

To calculate the mass of sucrose needed to make a 0.1 molar solution in 2000 grams of water, we need to use the formula:

[tex]m = n *M * MW[/tex]

Step 1: Calculate the number of moles of sucrose needed

Molarity (M) = 0.1 mol/L

volume of solution = 2000 grams of water ÷ density of water = 2000 mL

We need to calculate the number of moles of sucrose that would be present in 2000 mL of a 0.1 M solution:

moles of solute (n) = [tex]M * V = 0.1 mol/L *2.0 L = 0.2 moles[/tex]

Step 2: Calculate the mass of sucrose needed

Molecular weight of sucrose is 342.3 g/mol.

We can use the formula:

[tex]m = n * M * MW \\m = 0.2 moles *0.1 mol/L * 342.3 g/mol = 6.85 g[/tex]

To know more about Molecular weight, here

brainly.com/question/18948587

#SPJ4

Chemical equilibrium is a dynamic process. What does this mean?

1. Nothing is changing.

2. There are multiple reactants and products involved in the chemical reaction.

3. It appears as though nothing is happening, but there is constant change occurring.

4.The reaction has reached completion and stopped reacting.

Answers

Answer: 3. It appears as though nothing is happening, but there is constant change occurring.

Explanation:

equilibrium is the state when the changes cancel each other, and the net change is 0.

think of it like a stalemate in tug of war; both people are pulling, but you wont see anything change, because their forces are equal and in opposite direction :)

Ifa container of nitrogen and oxygen gas holds 2. 50 atm of N2 gas and 1. 50 atm of O2 gas, what


is the total pressure inside the container?

Answers

The total pressure inside the container is 4.00 atm. This is because the total pressure of a gas mixture is equal to the sum of the individual pressures of each gas present. In this case, we have 2.50 atm of N2 gas and 1.50 atm of O2 gas.

When these two values are added together, we get the total pressure of 4.00 atm. This total pressure is also known as the partial pressure of the gas mixture.

The partial pressure of the gas mixture is the sum of the individual partial pressures of each gas present. Since the total pressure of a gas mixture is equal to the sum of the individual pressures of each gas present, the total pressure in the container is 4.00 atm.

Know more about Total pressure here

https://brainly.com/question/30255561#

#SPJ11

If an area has a very cold climate, it is most likely that the area

Answers

If an area has a very cold climate, it is most likely that the area experiences low temperatures throughout the year.

Cold climate regions are often characterized by sub-zero temperatures and limited precipitation, which can lead to dry and barren landscapes. These regions are typically found in the polar regions of the world, such as the Arctic and Antarctic, as well as in high-altitude mountain ranges.

The cold climate can have a significant impact on the environment, with many plants and animals adapted to survive in the harsh conditions. In cold climates, plants and animals often have adaptations that help them conserve heat and energy, such as thick fur coats, hibernation, or slow growth rates.

This means that the biodiversity in cold climate regions may be different than that found in more temperate regions.

Human communities that live in cold climate regions have also adapted to the extreme conditions, often relying on traditional techniques to survive. For example, the Inuit people of the Arctic have developed an intricate knowledge of the land and sea to hunt, fish, and gather food. They have also developed specialized tools and clothing to withstand the cold temperatures.

Overall, a cold climate can have a significant impact on the environment and the communities that rely on it. Understanding the unique challenges and adaptations of these regions is crucial for effective conservation and management.

To know more about cold climate, visit:

https://brainly.com/question/11673115#

#SPJ11

Consider these two entries from a fictional table of standard reduction potentials.


X3+ + 3e—>


X(s)


E° = -2. 43 V


Y3+ + 3e—>


Y(S)


E° = -0. 44 V


What is the standard potential of a galvanic (voltaic) cell where X is the anode and Y is the cathode?


Edell


=


V

Answers

The standard potential of the galvanic cell where X is the anode and Y is the cathode is 1.99 V.

The standard potential of a galvanic cell can be calculated by subtracting the reduction potential of the anode (X) from the reduction potential of the cathode (Y).

E°cell = E°cathode - E°anode

In this case, Y has a higher reduction potential than X, so Y will be the cathode and X will be the anode.

E°cell = E°Y - E°X

E°cell = (-0.44 V) - (-2.43 V)

E°cell = 1.99 V

To know more about the standard potential of the galvanic cell, click below.

https://brainly.com/question/28167837

#SPJ11

If 3grams of sodium reacts with 25 grams of sulfuric acid to form sodium sulfate and 1 gram of hydrogen and no sodium is left after the reaction but 9grams of acid remained unreacted how many grams of sodium sulfate were formed

Answers

The balanced chemical equation for the reaction between sodium and sulfuric acid to form sodium sulfate and hydrogen gas is:

2Na + H2SO4 -> Na2SO4 + 2H2

From the given information, we can see that the reaction is limited by the amount of sodium available, since all of the sodium is used up in the reaction.

Therefore, we can use the amount of sodium to determine the amount of sulfuric acid that reacted and the amount of sodium sulfate that was formed.

1. Calculate the amount of sulfuric acid that reacted:

m(Sulfuric acid) = 25 g - 9 g = 16 g

n(Sulfuric acid) = m(Sulfuric acid) / M(Sulfuric acid) = 16 g / 98.08 g/mol = 0.163 mol

2. Calculate the amount of sodium sulfate formed:

Since the mole ratio of Na to Na2SO4 is 2:1, the number of moles of sodium used is:

n(Na) = m(Na) / M(Na) = 3 g / 22.99 g/mol = 0.1305 mol

The amount of sodium sulfate formed is also 0.1305 mol, since the mole ratio of Na to Na2SO4 is 2:1.

m(Na2SO4) = n(Na2SO4) x M(Na2SO4) = 0.1305 mol x 142.04 g/mol = 18.54 g

Therefore, 18.54 grams of sodium sulfate were formed in the reaction.

To know more about hydrogen  refer here

https://brainly.com/question/31018544#

#SPJ11

B) Express the answer to this multistep calculation using the appropriate number of significant figures: 87. 95 feet x 0. 277 feet +5. 02 feet - 1. 348 feet + 10. 0 feet.

Answers

The answer to the multistep calculation, expressed using the appropriate number of significant figures, is 24.3 feet.

In order to determine the appropriate number of significant figures in the answer, we need to follow the rules of significant figures for addition and subtraction.

When adding or subtracting numbers, the answer should be rounded to the same number of decimal places as the measurement with the least number of decimal places.

Here, the measurement with the least number of decimal places is 10.0 feet, which has one decimal place. Therefore, we should round the final answer to one decimal place as well.

Now, let's perform the calculation:

87.95 feet x 0.277 feet + 5.02 feet - 1.348 feet + 10.0 feet = 24.3108725 feet

Rounding to one decimal place, the final answer is:

24.3 feet

Therefore, the answer to the multistep calculation, expressed using the appropriate number of significant figures, is 24.3 feet.

To know more about significant figures  refer here:

https://brainly.com/question/29153641

#SPJ11

When ammonium is added to water the temperature of the water decreases. Ammonium nitrates can be recovered by evaporating the water added Which explains those observations A the ammonium nitrates dissolved in water and process is endothermic B the ammonium nitrate reacts with the water and process is endothermic C the ammonium nitrates dissolved in water and process is exothermic D the ammonium nitrate reacts with the water and process is exothermic

Answers

Ammonium nitrates can be recovered by evaporating the water added explains that ammonium nitrates dissolved in water and process is endothermic. Thus, option A is correct.

When ammonium is added to water, the temperature of the water decreases. This is because the dissolution of ammonium in water is an endothermic process, meaning it requires energy in the form of heat to take place. When ammonium dissolves in water, it absorbs heat from the surroundings, which causes the temperature of the water to decrease.

Furthermore, ammonium nitrates can be recovered by evaporating the water that was added. This indicates that the ammonium nitrates dissolved in water and the process is endothermic. If the ammonium nitrate had reacted with the water, it would not be possible to recover it by evaporation.

Therefore, option A, "the ammonium nitrates dissolved in water and process is endothermic," is the correct explanation for the observations that when ammonium is added to water, the temperature decreases, and ammonium nitrates can be recovered by evaporating the water added.

To know more about Ammonium nitrates, visit:

https://brainly.com/question/5148461#

#SPJ11

Determine the mass of ammonium chloride, NH4Cl, required to prepare 0. 250 L of a 0. 35 M solution of ammonium chloride.

Answers

We need 4.68 g of ammonium chloride (NH₄Cl) to prepare 0.250 L of a 0.35 M solution.

To determine the mass of ammonium chloride (NH₄Cl) required to prepare a 0.250 L (liters) of a 0.35 M (molar) solution, follow these steps:
1. Recall the formula for molarity: M = moles of solute / volume of solution in liters.
2. Rearrange the formula to solve for moles of solute: moles of solute = M x volume of solution in liters.
3. Calculate the moles of NH₄Cl needed: moles of NH₄Cl = 0.35 M x 0.250 L = 0.0875 moles.
4. Determine the molar mass of NH₄Cl by adding the molar masses of its constituent elements: (N = 14.01 g/mol, H = 1.01 g/mol, Cl = 35.45 g/mol): 14.01 + (4 x 1.01) + 35.45 = 53.49 g/mol.
5. Calculate the mass of NH₄Cl required: mass = moles x molar mass = 0.0875 moles x 53.49 g/mol = 4.680125 g.

So, you need 4.68 g of ammonium chloride (NH₄Cl) to prepare 0.250 L of a 0.35 M solution.

To know more about molarity :

https://brainly.com/question/13601876

#SPJ11

9. An unknown gas has a volume of 200L at 5 atm and -140°C. What is its volume at STP?


10. A Los Angeles class nuclear sub has an internal volume of eleven million liter at a


pressure of 1. 250 atm. If a crewman were to open one of the hatches to the outside


ocean while it was underwater (pressure of 15. 75 atm), what would be the new volume


of the air inside?


11. A man heats a balloon in the oven (Why?. Who knows?. It is a crazy world we live in).


If the balloon initially has a volume of 0. 40 L and a temperature of 20 °C, what is its


volume after he heats it to 250 °C?


Mixed Gas Laws


12. A gas has a pressure of 1. 26 atm and occupies a volume of 7. 40 L. If the gas is


compressed to a volume of 2. 93 L, what is its new pressure?


13. People who are angry sometimes say that they feel as if they'll explode. If a calm


person with a lung capacity of 3. 5 liters and a body temperature of 36 °C gets angry,


what is the volume of their lungs if their temperature rises to 39 °C. Do you think they


will really explode?

Answers

9. Using the combined gas law, the volume of the gas at STP can be calculated as 112.2 L. This equation takes into account the initial pressure, temperature, and volume, as well as the new pressure and temperature at STP.

10. Applying Boyle's law, the new volume of the air inside the submarine would be approximately 87,873.2 L. This is calculated by multiplying the initial volume and pressure, and dividing by the new pressure.

11. Using the combined gas law, the new volume of the balloon can be calculated as 0.98 L. This equation takes into account the initial temperature, volume, and pressure, as well as the new temperature.

12. Using Boyle's law, the new pressure of the gas can be calculated as 3.25 atm. This equation takes into account the initial pressure and volume, as well as the new volume.

13. Using Charles' law, the new volume of the person's lungs can be calculated as 3.8 L. This equation takes into account the initial lung capacity and temperature, as well as the new temperature.

It is highly unlikely that a person would actually explode from anger, as the body has mechanisms in place to regulate pressure and prevent such an event.

To know more about Charles' law click on below link:

https://brainly.com/question/16927784#

#SPJ11

calculate the molarity of 102.6 grams of sugar, C12H22O11 in 500. mL of solution

Answers

The molarity of the sugar solution is 0.5988 M (mol/L).

To calculate the molarity of a solution, we need to know the number of moles of solute (the substance being dissolved) and the volume of the solution in liters.

First, we need to determine the number of moles of sugar (C12H22O11) in the given mass of 102.6 grams:

The molar mass of C12H22O11 can be calculated as follows:

12(12.01 g/mol) + 22(1.01 g/mol) + 11(16.00 g/mol) = 342.3 g/mol

The number of moles of C12H22O11 in 102.6 grams can be calculated as:

102.6 g / 342.3 g/mol = 0.2994 mol

Next, we need to convert the volume of the solution from milliliters to liters:

mL = 0.5 L

Now we can calculate the molarity (M) of the solution:

M = moles of solute/liters of solution

M = 0.2994 mol / 0.5 L

M = 0.5988 M

Therefore, the molarity of the sugar solution is 0.5988 M (mol/L).

learn more about molarity here

https://brainly.com/question/14469428

#SPJ1

A student finds the mass and volume of four mystery liquids. The data is provided

Answers

The student's task is to determine the density of the four mystery liquids using the mass and volume measurements.

Density is a physical property that describes the amount of mass per unit volume.

The formula for density is density = mass/volume. Once the density of each liquid is determined, the student can compare it to known densities of different substances to identify the liquid.

This information can be useful in various fields such as chemistry, pharmacology, and environmental science.

The student may also use this data to calculate other properties of the liquids such as viscosity, surface tension, and boiling point. Overall, measuring mass and volume is a fundamental method in scientific research and analysis.

To know more about mystery liquids refer here: https://brainly.com/question/22053907#

#SPJ11

If 450 ml of water are added to 550 ml of a 0.75 m k2so4 solution, what will the molarity of the diluted solution be?

Answers

To determine the molarity of the diluted solution, we need to use the equation:

M1V1 = M2V2

where M1 is the initial molarity of the solution, V1 is the initial volume of the solution, M2 is the final molarity of the solution, and V2 is the final volume of the solution.

In this case, the initial solution is a 0.75 M K2SO4 solution with a volume of 550 mL, and water is added to make a final volume of 450 mL. We can write:

M1 = 0.75 M

V1 = 550 mL

V2 = 450 mL

We can solve for M2:

M1V1 = M2V2

0.75 M × 550 mL = M2 × 450 mL

M2 = (0.75 M × 550 mL) / 450 mL

M2 = 0.92 M

Therefore, the molarity of the diluted solution is 0.92 M.

To know more about molarity refer here

https://brainly.com/question/31545539#

#SPJ11

A 20. 0 g lead ball is heated in a Bunsen burner to 705 degrees celsius. It is then dropped into a 500. 0 g water bath. What is the initial temperature of the water if the final temperature is 35 degrees celsius? The C of lead is 0. 13 J/g degrees C.


[ Remember: Ch2o = 4. 18 J/g degrees celsius]

Answers

The initial temperature of the water is 25.8 °C. As a result, the lead ball loses heat rapidly when it is placed in the water bath, causing the water temperature to increase significantly.

What is  Temperature?

Temperature is a measure of the average kinetic energy of the particles in a substance. It is a physical quantity that describes how hot or cold an object is. Temperature is usually measured using a thermometer and is commonly expressed in units such as degrees Celsius (°C), Fahrenheit (°F), or Kelvin (K).

The energy gained by the water can also be calculated using the formula:

Q = mcΔT

where Q is the energy gained (in joules), m is the mass of the water (in grams), c is the specific heat capacity of water (in J/g°C), and ΔT is the change in temperature of the water (in °C).

We can calculate Q as follows:

Q = (500.0 g)(4.184 J/g°C)(35°C - T)

where T is the initial temperature of the water.

Since the energy lost by the lead ball is equal to the energy gained by the water, we can set these two equations equal to each other and solve for T:

(20.0 g)(0.13 J/g°C)(705°C - T) = (500.0 g)(4.184 J/g°C)(35°C - T)

Simplifying and solving for T gives:

T = 25.8°C

Therefore, the initial temperature of the water is 25.8 °C.

To know more about Temperature, visit;

https://brainly.com/question/26866637

#SPJ4

During this reaction, water is evaporating from the solution at the same time some of the co2 is dissolving into the water. How might these factors affect the results of the experiment? explain each effect and the overall effect.

Answers

The evaporation of water and dissolution of CO2 can affect the results of the experiment in several ways:

Concentration changes: As water evaporates, the concentration of the solute in the remaining solution increases. This can affect the rate of reaction, as the concentration of the reactants is a key factor in determining the rate. Similarly, as CO2 dissolves in the water, the concentration of dissolved CO2 increases, which can affect the pH of the solution.

Mass changes: As water evaporates, the mass of the solution decreases. This can affect the accuracy of the results, as the mass is often used to calculate the amount of product formed.

Temperature changes: Evaporation is an endothermic process, meaning that it requires energy in the form of heat. As a result, the temperature of the solution may decrease during the reaction, which can affect the rate of the reaction.

Overall, the effects of water evaporation and CO2 dissolution will depend on the specific conditions of the experiment, including the starting concentrations of the reactants and the rate of evaporation. In general, these factors can affect the accuracy and precision of the results, and must be carefully controlled or accounted for in order to obtain reliable data.

To know more about evaporation refer to-

https://brainly.com/question/5019199

#SPJ11

Solve the following problems using the chemical formulas as a conversion factor.


1. How many grams of Lead (Pb) contain 1. 25x104 grams of PbCO3?


2. Determine the number of moles of Hydrogen (H) in 0. 0737 mol of N2H4


3. How many grams of Iron (Fe) contain 6. 45x10-3 grams of Fe3O4?


4. Determine the number of moles of Sodium (Na) in 4. 2 mol of NaClO3

Answers

There are 0.1474 moles of hydrogen atoms in 0.0737 mol of N2H4.

What is Mole?

In chemistry, a mole is a unit used to express the amount of a substance. One mole of a substance is defined as the amount of that substance that contains as many elementary entities (atoms, molecules, or other particles) as there are atoms in 12 grams of carbon-12.

To determine the mass of lead in PbCO3, we need to use the molar mass of PbCO3 and the stoichiometric relationship between Pb and PbCO3. The molar mass of PbCO3 is 267.21 g/mol, and the stoichiometric relationship between Pb and PbCO3 is 1:1.

Thus, the mass of Pb in 1.25x10^4 g of PbCO3 can be calculated as follows:

Mass of Pb = (1.25x10^4 g PbCO3) x (1 mol PbCO3/267.21 g PbCO3) x (1 mol Pb/1 mol PbCO3) x (207.2 g Pb/mol Pb)

= 1.02x10^4 g Pb

Therefore, 1.02x10^4 g of Pb is contained in 1.25x10^4 g of PbCO3.

The formula for N2H4 indicates that there are two hydrogen atoms for every molecule of N2H4. Therefore, we can calculate the number of moles of hydrogen atoms in 0.0737 mol of N2H4 as follows:

Number of moles of H atoms = (0.0737 mol N2H4) x (2 mol H atoms/1 mol N2H4)

= 0.1474 mol H

Learn more about Mole, visit;

https://brainly.com/question/15356425

#SPJ4

A 4 L sample of gas at 30 degrees celcius and 1 atm is changed to 0 degrees celcius and 800torr. What is its new volume?

Answers

A 4 L sample of gas at 30 degrees celcius and 1 atm is changed to 0 degrees celcius and 800torr. 4.51 L is its new volume.

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas.

[tex]P1V1/T1 = P2V2/T2[/tex]

where P1, V1, and T1 are the initial conditions, and P2, V2, and T2 are the final conditions.

Substituting the given values, we get:

[tex]\left(\frac{{1 , \text{atm} \cdot 4 , \text{L}}}{{303 , \text{K}}}\right) = \left(\frac{{0.8 , \text{atm} \cdot V2}}{{273 , \text{K}}}\right)[/tex]

Solving for V2, we get:

[tex]V2 = \frac{{1 , \text{atm} \cdot 4 , \text{L} \cdot 273 , \text{K}}}{{303 , \text{K} \cdot 0.8 , \text{atm}}} = 4.51 , \text{L}[/tex]

Therefore, the new volume of the gas is 4.51 L when the temperature is changed from 30 degrees Celsius to 0 degrees Celsius and the pressure is changed from 1 atm to 800 torr.

To know more about the sample of gas refer here :

https://brainly.com/question/13137455#

#SPJ11

832 J of energy is used to raise the temperature of an unknown metal from 65oC to 71oC. If the specific heat of the metal is 0. 466 J/g*C, what is the mass of the metal sample? g (five sig figs)

Answers

The formula for calculating the amount of energy required to raise the temperature of a substance is:

q = m * c * ΔT

where q is the amount of energy, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature.

We can rearrange this formula to solve for the mass of the metal:

m = q / (c * ΔT)

Substituting the given values, we get:

m = 832 J / (0.466 J/g*C * (71oC - 65oC))

m = 832 J / (0.466 J/g*C * 6oC)

m = 832 J / 2.796 J/g

m = 297.1387678 g

Rounding to five significant figures, the mass of the metal sample is 297.14 g.

To know more about substance refer here

https://brainly.com/question/13320535#

#SPJ11

What concentration of ethylene glycol is needed to raise the boiling point


of water to 105°C? (K⬇️b = 0. 51°C/m)

Answers

The concentration of ethylene glycol needed to raise the boiling point of water to 105°C is 9.8 mol/kg or 9.80 molal concentration.

To calculate the concentration of ethylene glycol needed to raise the boiling point of water to 105°C, we can use the following formula:

ΔTb = Kb x molality

Where ΔTb is the change in boiling point, Kb is the boiling point elevation constant for water (0.51°C/m), and molality is the number of moles of solute per kilogram of solvent.

First, we need to calculate the ΔTb, which is the difference between the boiling point of the solution (105°C) and the boiling point of pure water (100°C):

ΔTb = 105°C - 100°C = 5°C

Next, we can plug in the values and solve for the molality:

5°C = 0.51°C/m x molality

Therefore;

molality = 5°C / 0.51°C/m

             = 9.8 mol/kg

To know more about boiling point elevation, click below.

https://brainly.com/question/31074906

#SPJ11

A container has 0.182 mol of CO₂ gas at STP. How many liters does the gas take up?

Answers

Answer:

4.08 L

Explanation:

At standard temperature and pressure, a mole of any gas equals 22.4 L.

We have 0.182 mol of CO₂ gas. We know that every mole of gas is 22.4 L, so

[tex]0.182mol*\frac{22.4L}{1mol} =4.08L[/tex]

⇒ 4.08 L of CO₂ is the answer

Answer:

SI Unit: Volume = 4.133 L of carbon dioxide

Non-SI Unit: Volume = 4.079 L carbon dioxide

Molar Volume of Gases:

At STP conditions (Standard Temperature and Pressure), which is conditions at 100 kPa and at 0°C or 273.15 K, it is a given that the volume of  1 mole of ideal gas is 22.71 L.

[tex]\large \textsf{$\therefore$ if 1 mol of CO$_2$ = 22.71 L}\\\\\large \textsf{hence, 0.182 $\times$ 1 mol of CO$_2$ = 22.71 $\times$ 0.182}\\\\\large \textsf{$\implies$ \boxed{\boxed{$volume = 4.133 L of CO$_2}}}[/tex]

Note: The value used for pressure above, 100 kPa (kilopascals), is a standard SI unit (International System of Units), used by most countries around the world.

However, another commonly used value for pressure (though not the preferred SI unit), is 1 atm (atmospheric pressure), which is equivalent to 101.325 kPa.

Using this value, the volume of 1 mole of ideal gas at STP is then 22.41 L. Solving this:

[tex]\large \textsf{if 1 mol of CO$_2$ = 22.41 L}\\\\\large \textsf{$\therefore$ 0.182 $\times$ 1 mol of CO$_2$ = 22.41 $\times$ 0.182}\\\\\large \textsf{$\implies$ \boxed{\boxed{$volume = 4.079 L CO$_2}}}[/tex]

To learn more about Standard Temperature and Pressure Conditions:

https://brainly.com/question/2783971

Other Questions
Listen to the audio clip. How does mozart signify that zerlina has changed her mind and has decided to go with don giovanni to his palace? Is genetic engineering a boon or bane? Defend your answer What type of pay is modeled below?(See chart)A. Piece rateB. Hourly pay with no bonusc. Commission payD. Hourly pay with a bonus How is thermal energy within the earths layers of related to some of its natural disasters A 20. 0 g lead ball is heated in a Bunsen burner to 705 degrees celsius. It is then dropped into a 500. 0 g water bath. What is the initial temperature of the water if the final temperature is 35 degrees celsius? The C of lead is 0. 13 J/g degrees C. [ Remember: Ch2o = 4. 18 J/g degrees celsius] Harry, harriet, and horance operate the triple h used car lot as a general partnership. pursuant to their agreement, each drives a triple h vehicle to and from work, makes various business trips about the city either from home or the lot, and keeps a "for sale" sign displayed in the vehicles windshield. each car is for sale at all times of the day and night and at any location. one afternoon, harriet was driving on a business trip when her car collided with one driven by paine, who was seriously injured. harriets conduct was found to be criminally negligent. in a tort action by paine against harry, harriet, and horance, both as individuals and as the triple h partnership, who is liable? You are working as a financial planner. a couple has asked you to put together an investment plan for the education of their daughter. she is a bright seven-year-old (her birthday is today), and everyone hopes she will go to university after high school in 10 years, on her 17th birthday. you estimate that today the cost of a year of university is $17,500, including the cost of tuition, books, accommodation, food, and clothing. you forecast that the annual inflation rate will be 5. 6%. you may assume that these costs are incurred at the start of each university year. a typical university program lasts 4 years. the effective annual interest rate is 6. 75% and is nominal. a. suppose the couple invests money on her birthday, starting today and ending one year before she starts university. how much must they invest each year to have money to send their daughter to university? (do not round intermediate calculations. round your answer to 2 decimal places. ) investment per year $ b. if the couple waits 1 year, until their daughters 8th birthday, how much more do they need to invest annually? (do not round intermediate calculations. round your answer to 2 decimal places. )additional yearly payments $ A marketing researcher for a phone company surveys 100 people and finds that that proportion of clients who are likely to switch providers when their contract expires is 0. 15. A. What is the standard deviation of the sampling distribution of the proportion? B. What is the probability that the sample proportion is between 0. 30 and 0. 40? what are the answers? thank you. Calculating the relative frequencies from the data given in the table. Choose all that correctly describe an association between favorite subject and grade 832 J of energy is used to raise the temperature of an unknown metal from 65oC to 71oC. If the specific heat of the metal is 0. 466 J/g*C, what is the mass of the metal sample? g (five sig figs) Which of the following excerpts from "Harrison Bergeron" best illustrates irony?O "If you see this boy," said the ballerina, "do not-I repeat, do not-try to reason with him."O "He is a genius and an athlete, is under-handicapped, and should be regarded as extremely dangerous."O "My God said George, "that must be Harrison!"O"Gee I could tell that one was a doozy," said Hazel.Mark this and returnSave and ExitNextSubmit Qiang wants to style a 3ft x 3ft entryway. estimate to determine which style of tile will be the least expensive for this project. EXPLAIN. Wu, inc. , purchased 200 shares of devito, inc. , at $12. 50 per share. Brokerage commissions were $80. Wu would debit for $ The function f (x) = 15(0.85)^xmodels the height, in feet, of a bouncing ball after x seconds.What is the initial height of the bouncing ball?What is the percent rate of change?What is the height of the bouncing ball after 5 seconds? Express your answers as a decimal rounded to the nearest hundredth. At the end of 2020, the records of Wolverine Corporation reflected the following. Common stock, $10 par; authorized 100,000 shares: issued and outstanding throughout the year, 50,000 shares $500,000Preferred stock, $50 par, 7%, cumulative, convertible into common stock, share for share; authorized, 10,000 shares; issued and outstanding throughout year, 2,000 shares 100,000Contributed capital in excess of par, common stock 80,000Retained earnings (no dividends declared during the year) 470,000Bonds payable, 10% nonconvertible, issued at par in 2016 150,000Net income 120,000Stock options outstanding (all year for 10,000 shares of common stock at $15 per share) Income tax rate, 25% Average market price of the common stock during 2020, $25 per share Requireda. Is this a simple or a complex capital structure?b. Compute the basic and Diluted EPS amounts what is x^2+y^2-16x+20y-5=0 in standard form You are on a plane leaving from Miami, Florida Heading directly towards Africa on a bearing of E 20 S. The planes average air speed is 600 mph and you fly for 4 hours before the pilot indicates that you willwith the same average air speed. The pilot is unable to outrun the storm and the turbulence is too much,have to re-route around a storm. The pilot adjusts his bearing to S 5'E for 2 hours then E 5S for an hourthe plane goes down, and your group are the only survivors stranded on an unknown island. You haveenough battery on a satellite phone one of you grabbed from the plane to make one phone call to thethey need to travel on from Miami to rescueyou. What do you tell them?rescue authorities in Miami and tell them the exact distance you are from Miami and the exact bearing A pair of dice are tossed twice. Find the probability that the first roll is a total of at least 5 and the second roll is a total of at least 4. help with questions 1-5 pls??