It's a beautiful sunny July day temperature is 22. 4°C and you are playing basketball. You are using a vessel that has a volume of 3. 1 L. Later that night, the temperature drops to 8. 5°C and you go out to play basketball again. What is the volume of the ball that evening in liters?

Answers

Answer 1

The volume of the vessel in the evening when the temperature drops to 8.5°C is approximately 2.64 L.

We can use the combined gas law to solve this problem, which relates the pressure, volume, and temperature of a gas. The formula is:

(P1 x V1)/T1 = (P2 x V2)/T2

where P is pressure, V is volume, and T is temperature.

Using the initial conditions, we have:

P1 = P2 (assuming atmospheric pressure remains constant)

V1 = 3.1 L

T1 = 22.4°C + 273.15

    = 295.55 K

Solving for V2, we get:

V2 = (P1 x V1 x T2)/(P2 x T1)

     = (1 x 3.1 x (8.5°C + 273.15))/(1 x 295.55)

      = 2.64 L

As a result, when the temperature lowers to 8.5°C in the evening, the volume of the vessel is roughly 2.64 L.

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Related Questions

At a festival, spherical balloons with a radius of 140cm are to be inflated with hot air and released. The air at the festival will have a temperature of 25 C and must be heated to100 C to make the balloons float. 1. 00kg of butane(C4H10) fuel are available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot air

Answers

The maximum number of balloons that can be inflated with hot air is 0.017 balloons.

What is inflated?

Inflation is an economic concept that refers to the increase in the cost of goods and services over time. High inflation can lead to a decrease in purchasing power, as prices rise faster than wages.

The amount of heat energy required to heat 1 kg of air from 25 C to 100 C is 150 kJ.

Since 1kg of butane (C₄H₁₀) fuel releases around 46.9 kJ of energy when burned, we can calculate how much fuel is needed to heat 1 kg of air.

150 kJ / 46.9 kJ = 3.19 kg of fuel

To calculate the maximum number of balloons that can be inflated with hot air, we need to know the volume of air contained in the balloons.

Volume of the balloon = 4/3πr3

Volume of the balloon = 4/3π(1403)

Volume of the balloon = 1.71 m3

To calculate the mass of air contained in the balloon, we can use the ideal gas law, where PV = nRT.

P = Pressure, V = Volume, n = number of moles, R = gas constant, T = Temperature

Pressure = 1 atm

Volume = 1.71 m3

Number of moles = 1

Gas constant = 8.314

Temperature = 25 C

nRT/V = P

1 (8.314) (298.15) / 1.71

= 183.6 kg

Therefore, the mass of air contained in the balloon is 183.6 kg.

To determine the maximum number of balloons that can be inflated with hot air, we need to know the total mass of fuel available.

1 kg of fuel x 3.19 = 3.19 kg of fuel

To calculate the maximum number of balloons that can be inflated with hot air, we need to divide the mass of fuel available by the mass of air contained in the balloon.

3.19 kg / 183.6 kg = 0.017

Therefore, the maximum number of balloons that can be inflated with hot air is 0.017 balloons.

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D. When the astronauts get this water in space they perform electrolysis and only are able to
experimentally make 43,200g of O₂. Using this as your experimental (actual) yield and your answer
from part C as your theoretical, calculate the percent yield of Oxygen.
actual yield
theoretical yield
x 100%
percent yield
=

Answers

Answer:

The theoretical yield of oxygen (O2) can be calculated using the balanced chemical equation:

2 H2O(l) → 2 H2(g) + O2(g)

From part (c), we calculated that 90.0 g of water (H2O) can produce 31.98 g of oxygen (O2). Therefore, the theoretical yield of oxygen from 43,200 g of water is:

theoretical yield = (31.98 g O2 / 90.0 g H2O) x 43,200 g H2O

theoretical yield = 15,379.2 g O2

The percent yield of oxygen can be calculated using the formula:

percent yield = (actual yield / theoretical yield) x 100%

Substituting the given values, we get:

percent yield = (43,200 g / 15,379.2 g) x 100%

percent yield ≈ 280.9%

This result seems unusually high, and suggests an error in the calculations or experimental data. A percent yield greater than 100% indicates that the actual yield is greater than the theoretical yield, which is usually not possible due to limitations in the reaction conditions or experimental procedures.

The tin and zinc contents of a brass sample are analyzed with the following results:

(a) Zn: 33. 27, 33. 37, and 33. 34%

(b) Sn: 0. 022, 0. 025, and 0. 026%

Calculate the standard deviation and the coefficient of variation (relative standard

deviation) for the analysis. ​

Answers

The standard deviation for Zn is 0.05528%, and for Sn is 0.000336%. The coefficients of variation are 0.1658% for Zn and 1.379% for Sn.

To calculate the standard deviation and coefficient of variation, we need to first find the mean and variance of the data.

For Zn;

Mean = (33.27 + 33.37 + 33.34) / 3 = 33.3267%

Variance = [(33.27 - 33.3267)² + (33.37 - 33.3267)² + (33.34 - 33.3267)²] / 2

= 0.00305627

For Sn;

Mean =(0.022 + 0.025 + 0.026) / 3

= 0.0243%

Variance = [(0.022 - 0.0243)² + (0.025 - 0.0243)² + (0.026 - 0.0243)²] / 2

= 1.13E-07

Now we calculate the standard deviation and coefficient of variation;

Standard deviation (Zn) = √(0.00305627)

= 0.05528%

Standard deviation (Sn) = √(1.13E-07)

= 0.000336%

Coefficient of variation (Zn) = (0.05528 / 33.3267) x 100%

= 0.1658%

Coefficient of variation (Sn) = (0.000336 / 0.0243) x 100%

= 1.379%

Therefore, the standard deviation for Zn and Sn is 0.05528% and 0.000336%. The coefficients of variation for Zn and Sn is  0.1658% and  1.379%.

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Elementary analysis showered that an organic compound contained c, h, n and o as the only elementary constituent. a 1.279g sample was burnt completely as a result of which 1.6g of co2, 0.77g of h2o were obtained. a separately weighted of nitrogen. what is the empirical formula of the compound?

Answers

The empirical formula of the compound is C₂H₆O₂N.

To determine the empirical formula, we need to find the mole ratios of the elements in the compound. First, we can calculate the moles of CO₂ and H₂O produced from the combustion reaction:

moles of CO₂ = 1.6 g / 44.01 g/mol = 0.0364 mol

moles of H₂O = 0.77 g / 18.015 g/mol = 0.0428 mol

Next, we can calculate the moles of C, H, and O in the original sample using the mass balance:

moles of C = moles of CO₂ = 0.0364 mol

moles of H = (moles of H₂O) x (2 H atoms per molecule) = 0.0856 mol

moles of O = (moles of CO₂) x (2 O atoms per molecule) = 0.0728 mol

Finally, we can calculate the moles of N using the separate measurement:

moles of N = 0.0403 g / 14.01 g/mol = 0.00287 mol

To get the empirical formula, we need to find the smallest whole number ratio of the elements. Dividing each of the moles by the smallest value (0.00287 mol) gives:

C = 12.64 / 0.00287 = 4.39 ≈ 4

H = 17.13 / 0.00287 = 5.96 ≈ 6

O = 25.38 / 0.00287 = 8.83 ≈ 9

N = 0.00287 / 0.00287 = 1

So the empirical formula is C₂H₆O₂N, which has a molar mass of 90.09 g/mol. However, this is only the empirical formula and not the molecular formula, which could be a multiple of the empirical formula.

Further analysis would be needed to determine the molecular formula of the compound.

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When a car is far away, its headlights
are bright, than when the car passes you. True/False?

Apparent brightness of a star is low bright the alar
from Farth. True/false

Answers

Answer:

Explanation:

no

For the first statement, it is generally true that when a car is far away, its headlights appear brighter than when the car passes you. This is because the headlights are focused in a narrower beam when the car is far away, which makes them appear brighter. As the car approaches and passes you, the beam of light is spread out over a wider area, making it appear dimmer.

For the second statement, it is generally true that the apparent brightness of a star is lower the farther away it is from Earth. This is due to the inverse square law of light propagation, which states that the intensity of light decreases with the square of the distance from the source. So, as a star gets farther away from Earth, its light has to travel a greater distance, and therefore spreads out over a larger area, making it appear dimmer.

What volume of each solution contains 0. 12 mol of KCl? Answer in liters



Part A 0. 211 M KCl


Part B 1. 7 M KCl


Part C 0. 855 M KCl

Answers

Part A: 0.568 L, Part B: 0.071 L, Part C: 0.140 L

Part A: To find the volume of the 0.211 M KCl solution that contains 0.12 mol of KCl, use the formula:

M = mol / L
0.211 M = 0.12 mol / volume

Rearranging the formula and solving for the volume:

Volume = 0.12 mol / 0.211 M = 0.568 L

Part B: To find the volume of the 1.7 M KCl solution that contains 0.12 mol of KCl:

1.7 M = 0.12 mol / volume

Volume = 0.12 mol / 1.7 M = 0.071 L

Part C: To find the volume of the 0.855 M KCl solution that contains 0.12 mol of KCl:

0.855 M = 0.12 mol / volume

Volume = 0.12 mol / 0.855 M = 0.140 L

So, the volumes containing 0.12 mol of KCl are as follows:
Part A: 0.568 L
Part B: 0.071 L
Part C: 0.140 L

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Provide an example of newton’s 3rd law

Answers

A bullet recoiling after it is fired



Write a conversation between you and your friend about a job agency and it's reliability. ​

Answers

In a conversation between myself and a friend about a job agency and its reliability, we would discuss the following points:

1. Friend: "Hey, have you heard about the XYZ Job Agency? I'm considering using their services to find a new job."

2. Me: "Yes, I have heard of them. They are known for connecting job seekers with potential employers. They specialize in various industries, which is a plus. However, it's essential to research their success rate and client feedback to determine their reliability."

3. Friend: "That's a good idea. I'll look into their reviews and testimonials to see what others have experienced with their services."

4. Me: "Another important aspect to consider is the type of positions they primarily offer. Are they mainly temporary roles or long-term positions? Depending on your career goals, this information could be crucial in your decision-making process."

5. Friend: "True, I'll make sure to check the job types they provide. I'm looking for something stable and long-term."

6. Me: "Lastly, you might want to inquire about any fees or charges associated with using their services. Some job agencies charge the job seeker, while others receive their payment from the employer. This could impact your overall experience with the agency."

7. Friend: "Thanks for the advice. I'll definitely consider all these factors before deciding whether to use the XYZ Job Agency. I appreciate your input!"

By following this conversation, we covered the key aspects of a job agency's reliability, such as their success rate, client feedback, job types offered, and fees associated.

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how might an enzyme speed up a certain chemical reaction? 1 point by binding to the substrate(s) in the active site in an optimal orientation by creating an environment suitable for catalysis (e.g. acidic / basic residues) by stabilising the highest energy part of the reaction (transition state) by expelling water/unwanted reactants from the active site all of the above

Answers

An enzyme can speed up a certain chemical reaction by all of the above ways mentioned. Option E is correct.

Enzymes are biological catalysts that increase the rate of chemical reactions without being consumed in the process. Enzymes work by binding to their substrates in a specific manner, which allows for the formation of an enzyme-substrate complex. The active site of the enzyme provides a suitable environment for catalysis, with the presence of acidic or basic residues, which can act as proton donors or acceptors to facilitate the reaction.

Additionally, enzymes can stabilize the highest energy part of the reaction, which is called the transition state. By stabilizing the transition state, the enzyme can lower the activation energy required for the reaction to occur. Enzymes can also expel water or unwanted reactants from the active site to prevent non-specific reactions from occurring. All of these mechanisms work together to speed up a certain chemical reaction and make it occur more efficiently. Option E is correct.

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A sample of nitrogen gas has a pressure of 6. 00 kpa at 540 K. If the volume does not change, what will the pressure bat at 250. 0 K?

Answers

The pressure of the nitrogen gas at 250.0 K will be 2.78 kPa.

To find the pressure of the nitrogen gas at 250.0 K, we will use the combined gas law formula:
P₁/T₁ = P₂/T₂

Where P₁ is the initial pressure (6.00 kPa), T₁ is the initial temperature (540 K), P₂ is the final pressure (which we want to find), and T₂ is the final temperature (250.0 K).

Since the volume does not change, we can use this simplified formula.

Step 1: Rearrange the formula to solve for P₂:
P₂ = (P₁ × T₂) / T₁

Step 2: Plug in the given values and calculate P₂:
P₂ = (6.00 kPa × 250.0 K) / 540 K

Step 3: Calculate P₂:
P₂ = 1500 / 540 = 2.78 kPa (rounded to two decimal places)

So, the pressure of the nitrogen gas at 250.0 K will be 2.78 kPa.

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3. 80 mol O2 will produce how many moles of CO2? Include entire unit (mol) and


compound formula, 3 sig figs.

Answers

The 3.80 mol Oxygen will produce 2.17 mol CO₂.

Assuming complete combustion of the oxygen, the balanced chemical equation is:

2C₂H₆ + 7O₂ -> 4CO₂ + 6H₂O

For every 7 moles of O₂ consumed, 4 moles of CO₂ are produced. Therefore, we can use a proportion to calculate the number of moles of CO₂ produced by 3.80 mol of O₂:

Number of moles of CO₂ produced= number of moles of O₂ x (4 moles of CO₂ are produced/7 moles of O₂ consumed)
Number of moles of CO₂ produced= (4 mol CO₂ / 7 mol O₂) x 3.80 mol O₂

Number of moles of CO produced = 2.17 mol

Therefore, 2.17 mol CO₂ will result from 3.80 mol O₂. The compound formula is C₂H₆ .

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A solution of potassium hydroxide (koh) was titrated against a solution of hydrochloric acid. it took


35cm3 of the hydrochloric acid to completely neutralise 50cmº of potassium hydroxide. work out the


concentration of the potassium hydroxide solution in mol/dmº if the concentration of the acid was


2mol/dm3. round your answer to 1 d.p.

Answers

The concentration of the potassium hydroxide solution is 1.4 mol/dm³.

To calculate the concentration of the potassium hydroxide (KOH) solution, we can use the formula:

moles of acid = moles of base

For a titration involving hydrochloric acid (HCl) and potassium hydroxide (KOH), the balanced chemical equation is:

HCl + KOH → KCl + H2O

From the balanced equation, we can see that 1 mole of HCl reacts with 1 mole of KOH. Given the volume and concentration of the acid, we can first find the moles of HCl:

moles of HCl = volume (dm³) × concentration (mol/dm³)
moles of HCl = 0.035 dm³ × 2 mol/dm³
moles of HCl = 0.07 moles

Since moles of acid = moles of base, we have:

moles of KOH = 0.07 moles

Now, we can find the concentration of KOH:

concentration of KOH (mol/dm³) = moles of KOH / volume of KOH (dm³)
concentration of KOH = 0.07 moles / 0.050 dm³
concentration of KOH = 1.4 mol/dm³ (rounded to 1 decimal place)

Thus, the concentration of the potassium hydroxide solution is 1.4 mol/c.

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A Gas Thermometer Measures Temperature By Measuring The Pressure Of A Gas Inside The Fixed Volume Container. A Thermometer Reads A Pressure Of 780 mmHg at 0C. What Is The Temperature When The Thermometer Reads A Pressure Of 800 mmHg?​

Answers

The temperature when the thermometer reads a pressure of 800 mmHg is approximately 282.2 K (or 9.1 °C).

To solve this problem, we can use the ideal gas law:

PV = nRT

We can use this equation to calculate the temperature of the gas when the pressure is 800 mmHg.

First, we need to convert the pressures from mmHg to atm, since R is in units of L·atm/K·mol.

1 atm = 760 mmHg

780 mmHg = 1.026 atm

800 mmHg = 1.053 atm

Next, we can set up a ratio of the two pressures and temperatures:

P1/T1 = P2/T2

[tex](1.026 atm) / (273.15 K) = (1.053 atm) / T2[/tex]

Solving for T2, we get:

[tex]T2 = (1.053 atm) / (1.026 atm/273.15 K) \\T2 = 282.2 K[/tex]

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Calculate the energy of rogue wave of this amplitude. 15 meters

Answers

The energy of a rogue wave with an amplitude of 15 meters is 2,207,250 joules.

To do this, we need to use the following terms: potential energy, kinetic energy, and wave energy. Here's the step-by-step explanation:

1. Determine the amplitude (A) of the rogue wave: In this case, the amplitude is given as 15 meters.

2. Calculate the potential energy (PE):

The potential energy of a wave is given by the formula PE = (1/2)ρgA², where ρ is the density of water (approximately 1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²), and A is the amplitude. Plugging in the values, we get PE = (1/2) * 1000 * 9.81 * (15)² = 1,103,625 J (joules).

3. Calculate the kinetic energy (KE): The kinetic energy of a wave is equal to its potential energy, so KE = 1,103,625 J.

4. Calculate the total wave energy (E): The total energy of a rogue wave is the sum of its potential and kinetic energy, E = PE + KE = 1,103,625 + 1,103,625 = 2,207,250 J.

So, the energy of a rogue wave with an amplitude of 15 meters is 2,207,250 joules.

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What is the molar solubility of Ba3(PO4)2. Ksp Ba3(PO4)2 = 1. 3x10-29

Answers

The molar solubility of [tex]Ba_3(PO_4)_2[/tex]  is [tex]6.1 * 10^{-10} M[/tex].

The molar solubility  [tex]Ba_3(PO_4)_2[/tex] can be calculated using the solubility product constant (Ksp) expression:

[tex]Ksp = [Ba_2+ ]^3[PO_{43-} ]^2[/tex]

where [tex][Ba_2+][/tex] and [tex][PO_{43-}][/tex] are the molar concentrations of barium ions and phosphate ions in the saturated solution, respectively.

To find the molar solubility, we assume that x moles of [tex]Ba_3(PO_4)_2[/tex]dissolved in 1 liter of water give 3x moles of [tex]Ba_2[/tex]+ and 2x moles of [tex]PO_{43}[/tex]-. Substituting these values into the Ksp expression, we have:

Ksp = [tex](3x)^3(2x)^2 = 1.3*10^{-29}[/tex]

Solving for x, we get:

x =[tex]6.1 * 10^{-10} M[/tex]

This means that at equilibrium, the concentration of barium ions is three times this value, or [tex]1.8*10^{-9} M[/tex], and the concentration of phosphate ions is twice this value or [tex]1.2 * 10^{-9}[/tex] M.

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Explain your thinking. describe the "rule" or reasoning you used to decide if something is a plant.

Answers

Plants are multicellular eukaryotes that belong to the Kingdom Plantae. They are characterized by various features, including the ability to produce their food through photosynthesis, a rigid cell wall composed of cellulose, and a lack of mobility. However, not all organisms that photosynthesize are plants.

To determine if something is a plant, biologists usually consider several criteria, including:

1. Photosynthesis: Plants are autotrophs that use chlorophyll and other pigments to capture light energy and convert it into chemical energy to synthesize their food.

2. Cell structure: Plants have a rigid cell wall composed of cellulose, which provides structural support to the cell and prevents it from bursting. The presence of cellulose is a defining feature of plants.

3. Reproduction: Most plants reproduce sexually, but some can reproduce asexually. Sexual reproduction in plants involves the fusion of gametes produced by male and female reproductive structures.

4. Growth: Plants grow by increasing the number and size of their cells, and they can form complex organs such as roots, stems, and leaves.

5. Lack of mobility: Unlike animals, plants are immobile and are rooted to the ground or a substrate.

By considering these characteristics, scientists can determine whether an organism belongs to the Kingdom Plantae or not.

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Use Boyle's, Charle's, or Gay-Lussac's law to calculate the missing value in each of the following. A. V1=2. 0 L, P1=0. 82 Atm, V2=1. 0 L, p2=?

Answers

After using Gay-Lussac's Law the missing value in this problem is P2, which is equal to 1.64 Atm

In this problem, we can use Gay-Lussac's law to calculate the missing value. Gay-Lussac's law states that at constant volume, the pressure of a gas is directly proportional to its temperature. In other words, if we increase the temperature of a gas, its pressure will increase as well, as long as the volume remains constant.

To use Gay-Lussac's law, we need to know the initial pressure and volume of the gas, as well as the final volume. We can then calculate the final pressure using the formula:

P2 = (P1 * V1 * T2) / (V2 * T1)

In this case, we know that V1 = 2.0 L, P1 = 0.82 Atm, V2 = 1.0 L, and we need to find P2. We don't know the temperature of the gas, but since the volume is decreasing and the pressure is likely to increase, we can assume that the temperature is staying the same.

Plugging in the values we have, we get:

P2 = (0.82 Atm * 2.0 L * T2) / (1.0 L * T1)

Simplifying this expression, we get:

P2 = 1.64 Atm

Therefore, the missing value in this problem is P2, which is equal to 1.64 Atm. We used Gay-Lussac's law to calculate this value based on the initial pressure, volume, and the final volume of the gas.

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Imagine a piston with an external pressure of 1 bar that contains liquid water, water vapor, and nitrogen gas. the piston is in thermal contact with a large reservoir held at 270.15 k. initially the partial pressure of water vapor in the piston is 489 pa; nothing changes for a long time. at some point the water crystallizes and the system comes to a new equilibrium; the new partial pressure of water vapor in the piston is 475 pa. calculate the difference in the chemical potential for liquid and crystalline water at 270.15 k. (to think about: does the sign of your answer make sense

Answers

The difference in the chemical potential for liquid and crystalline water at 270.15 K is -0.97 J/mol.


1. Convert given pressures to atm: initial partial pressure of water vapor (P1) = 489 Pa / 101325 Pa/atm = 0.00482 atm, and new partial pressure (P2) = 475 Pa / 101325 Pa/atm = 0.00469 atm.


2. Use the Clausius-Clapeyron equation: ln(P2/P1) = -(ΔH_sub/R)(1/T2 - 1/T1), where ΔH_sub is the enthalpy of sublimation, R is the gas constant, and T1 and T2 are the initial and final temperatures, both equal to 270.15 K.


3. Rearrange the equation to solve for ΔH_sub: ΔH_sub = R * (ln(P2/P1))/(1/T2 - 1/T1), and substitute the values: ΔH_sub = 8.314 J/mol K * (ln(0.00469/0.00482))/(0 - 0) = -0.97 J/mol.


4. The negative sign makes sense as the system moves to a new equilibrium with a lower chemical potential for crystalline water, indicating a more stable phase.

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If 3.1127 moles of H2O are reacted, how many moles of CO2 will be produced?

Answers

The balanced chemical equation for the reaction between H2O and CO2 is:

H2O + CO2 -> H2CO3

From the balanced equation, we can see that one mole of CO2 reacts with one mole of H2O to produce one mole of H2CO3. Therefore, the number of moles of CO2 produced will be equal to the number of moles of H2O reacted.

So, if 3.1127 moles of H2O are reacted, then 3.1127 moles of CO2 will be produced.

50.0 g (convert mL to L) of water cools from 100°C to 88°C. What is the correct description of the heat transfer? The specific heat capacity of water is 4.184 J/g·°C. Use the equation q= m x C x T change. T change = Final temperature- Initial temperature.

Group of answer choices

600 joules are released

2510 joules are absorbed

600 joules are absorbed

2510 joules are released

Answers

The correct description of the heat transfer is heat is released. Hence the heat released is 2150 J (last option)

How do i determine the heat released?

The following data were obtained from the question:

Mass of water (M) = 50.0 gInitial temperature of water (T₁) = 100 °CFinal temperature of water (T₂) = 88 °CChange in temperature (ΔT) = 88 - 100 = -12 °C Specific heat capacity of water (C) = 4.184 J/gºC Heat energy (Q) =?

The heat released or absorbed can be obtain as follow:

Q = MCΔT

Q = 50 × 4.184 × -12

Q = -2510 J

From the above, we can see that the heat energy is negative (i.e -2510 J).

Thus, we can conclude that the description of the heat transfer is heat is released (last option)

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the process in which an atom or ion experiences a decrease in its oxidation state is _____________.

Answers

Answer:

Reduction

Explanation:

What mass of methyl butanoate is produced from the reaction of 52.5g of butanoic acid answer

Answers

The yield of the reaction may be less than 100%, so the actual mass of methyl butanoate produced may be lower.

The balanced chemical equation for the reaction is needed to determine the molar ratio between butanoic acid and methyl butanoate. However, assuming that the reaction is the esterification of butanoic acid with methanol to produce methyl butanoate and water, the balanced chemical equation is:

CH₃CH₂CH₂COOH + CH₃OH → CH₃CH₂CH₂COOCH₃ + H₂O

From the balanced equation, the stoichiometry is 1:1 between butanoic acid and methyl butanoate. This means that 52.5g of butanoic acid would produce 52.5g of methyl butanoate. However, because the reaction yield may be less than 100%, the actual mass about methyl butanoate produced may be lower.

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Can someone answer please, also please give the steps.

Answers

The volume (in milliliters) of the 2.00 M NaOH solution that can be produced from the reaction is 955 mL

How do i determine the volume of NaOH produced?

First, we shall determine the mole of 44.00 grams of Na that reacted. Details below:

Mass of Na = 44.00 grams Molar mass of Na = 22.99 g/mol Mole of Na =?

Mole = mass / molar mass

Mole of Na = 44 / 22.99

Mole of Na = 1.91 moles

Next, we shall determine the mole of NaOH obtained from the reaction. Details below:

2Na + 2H₂O -> 2NaOH+ H₂

From the balanced equation above,

2 moles of Na reacted to produced 2 moles of NaOH

Therefore,

1.91 moles of Na will also react to produce 1.91 moles of NaOH

Finally, we shall determine the volume of the 2.00 M NaOH produced. Details below:

Molarity of NaOH = 2.00 MMole of NaOH = 1.91 molesVolume of NaOH =?

Volume = mole / molarity

Volume of NaOH = 1.91 / 2

Volume of NaOH = 0.955 L

Multiply by 1000 to express in milliliter

Volume of NaOH = 0.955 × 1000

Volume of NaOH = 955 mL

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The electron configuration for the element bismuth, (Bi, atomic #83) is: ? 1s22s22p63s23p64s24d104p65s25d105p66s26d106p3 ? 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p3 ? 1s22s22p63s23p64s23d104p65s24d105p66s25d106p3 ? 1s22s22p63s23p64s24d104p65s25d105p66s26f146d106p3

Answers

The correct electron configuration for bismuth is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p³. Option 2.

Electron configuration of elements

Bismuth has an atomic number of 83, and hence, has 83 electrons.

According to the Aufbau principle, electrons fill up orbitals in order of increasing energy levels; s, p, d, and f with a maximum electron of 2, 6, 10, and 14 respectively.

The electron configuration for bismuth can be written by following this principle, starting from the first energy level and moving up to the sixth energy level.

Therefore, the electron configuration for bismuth is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p³.

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F) Suppose you saw a vipening. You asked green apple tu xhing ved while turining this questions to your science teacher and got answer what step of scientific learning did you follow?​

Answers

There has been extensive research on how learning works across many different academic fields.

Thus,  Basic studies of the brain mechanisms underlying learning in humans and other species have traditionally been conducted in the fields of neurology and biology and learning.

Studies of how the human mind "computes," creating and applying knowledge, have typically been conducted in the fields of cognitive science and psychology and academic fields.

Studies of how machines (such as computers and robots) learn have typically been conducted in the fields of computer science and other branches of engineering; and studies of how learning occurs in the learning.

Thus, There has been extensive research on how learning works across many different academic fields.

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A specific radioactive isotope is presented for our scientific evaluation for possible use of this isotope within the field of radioisotopic medical tracers. At 1 pm, there are 5. 6 grams and at 7 pm, there are 3. 2 grams. What's the half-life?



A) about 3. 2 hours


B) about 7. 4 hours


c) about 17. 1 hours


D) over 24 hours

Answers

The half-life of the radioactive isotope is B) about 7.4 hours based on the given information of its initial mass at 1 pm and its mass at 7 pm.

To determine the half-life of the isotope, we can use the radioactive decay formula:

[tex]N = N0 * (1/2)^(t/T)[/tex]

where N is the final amount, N0 is the initial amount, t is the time elapsed, T is the half-life.

We can plug in the values given:

N0 = 5.6 g

N = 3.2 g

t = 6 hours (from 1 pm to 7 pm)

T = unknown

[tex]3.2 = 5.6 * (1/2)^(6/T)[/tex]

Solving for T:

[tex](1/2)^(6/T) = 3.2/5.6[/tex]

[tex]ln[(1/2)^(6/T)] = ln(3.2/5.6)[/tex]

[tex](6/T)ln(1/2) = ln(3.2/5.6)[/tex]

[tex]6/T = -0.633[/tex]

T = -9.47 hours

Since the half-life can't be negative, we made a mistake somewhere in the calculations. One common mistake is forgetting to use the natural logarithm (ln) instead of the common logarithm (log). Using the correct logarithm, we get:

[tex]ln[(1/2)^(6/T)] = ln(3.2/5.6)[/tex]

[tex](6/T)ln(1/2) = ln(3.2/5.6)[/tex]

[tex](6/T)(-0.693) = -0.601[/tex]

[tex]T = 6*(-0.693)/(-0.601) = 6*1.151 = 6.906[/tex]

Therefore, the half-life is about 6.9 hours, which is closest to option B) about 7.4 hours.

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How many moles of zinc are produced when 2 moles of hydrogen react in the given
reaction?
zn + 2hci——>zncl2 + h2

Answers

2 moles of Zn are produced when 2 moles of hydrogen react in the given reaction: [tex]Zn + 2HCl[/tex]  → [tex]ZnCl_2 + H_2[/tex]

The balanced chemical equation for the reaction between zinc (Zn) and hydrochloric acid (HCl) is:

[tex]Zn + 2HCl[/tex] → [tex]ZnCl_2 + H_2[/tex]

Therefore, if 2 moles of [tex]H_2[/tex] are produced, we can work backward to determine how many moles of Zn must have reacted.

Starting with 2 moles of [tex]H_2[/tex], we know that it must have come from the reaction of 1 mole of Zn, since the mole ratio of Zn to [tex]H_2[/tex] is 1:1. Therefore, for every 1 mole of Zn that reacts, we get 1 mole of [tex]H_2[/tex].

So, if 2 moles  [tex]H_2[/tex] are produced. Thus, the answer is 2 moles of Zn.

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What type of reaction is A + B + 210 ) >>> C

Answers

The reaction A + B + 210 → C can be categorized as a combination reaction.

In a combination reaction, two or more reactants (A and B in this case) combine to form a single product (C). The number 210 could be a typo or an irrelevant part of the equation, as it does not fit the standard chemical notation.

Based on the information you provided, the reaction can still be categorized as a combination reaction. In a combination reaction, two or more reactants combine to form a single product.

In this case, reactants A and B react together to produce product C. However, without further information or a corrected equation, it is not possible to provide specific details about the reaction or the substances involved.

If you have any additional information or a revised equation, please provide it, and I would be happy to assist you further.

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Place the following atoms in order of increasing atomic radii: se, sb, br, and te

Answers

The order of increasing atomic radii for the given elements is: Br < Sb < Se < Te.

When we talk about atomic radii, we are referring to the size of an atom. The atomic radius increases as we move down a group in the periodic table, and it decreases as we move across a period. This is because as we move down a group, the number of electron shells increases, leading to a larger atomic radius.

Conversely, as we move across a period, the number of protons in the nucleus increases, leading to a stronger attractive force on the electrons, resulting in a smaller atomic radius.

In the case of the four elements given - selenium (Se), antimony (Sb), bromine (Br), and tellurium (Te) - we need to determine their position in the periodic table to determine the order of increasing atomic radii.

Starting from the top, we have selenium (Se) and tellurium (Te) in the same group, but Te has a larger atomic number, so it has more electron shells, resulting in a larger atomic radius. Next, we have antimony (Sb), which is in the same period as Te, but with a smaller atomic number, meaning it has a smaller atomic radius.

Finally, we have bromine (Br), which has the smallest atomic number and is also in the same period as Sb, so it has the smallest atomic radius.

Therefore, the order of increasing atomic radii for the given elements is: Br < Sb < Se < Te.

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A 50. 0 ml. Soap bubble is blown at standard pressure. When a thunderstorm passes later in the day, the pressure becomes 700. 0 mmHg. Will the bubble get bigger or smaller? What is its new volume?

Answers

The new volume of the soap bubble is approximately 54.29 mL. Since the volume has increased, the bubble will get bigger when the pressure drops to 700.0 mmHg during the thunderstorm.



A 50.0 mL soap bubble is blown at standard pressure. When a thunderstorm passes later in the day, the pressure becomes 700.0 mmHg. To determine if the bubble will get bigger or smaller and to find its new volume, we will use Boyle's Law, which states that P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

Step 1: Convert the initial and final pressures to the same unit. The standard pressure is 1 atmosphere (atm), which is equivalent to 760 mmHg. The final pressure is given as 700.0 mmHg.

Step 2: Apply Boyle's Law. Let P1 = 760 mmHg, V1 = 50.0 mL, and P2 = 700.0 mmHg. We will solve for V2, the new volume.

760 mmHg * 50.0 mL = 700.0 mmHg * V2

Step 3: Solve for V2.

V2 = (760 mmHg * 50.0 mL) / 700.0 mmHg
V2 ≈ 54.29 mL

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