675.0 mL of air is at 32.0 °C. What is the volume at 75.0 °C?

Answers

Answer 1

Answer: 770 mL

Explanation:

Charles' law states that [tex]\frac{V_{1} }{T_{1} } =\frac{V_{2} }{T_{2} }[/tex], so as temperature increases, volume does as well. We can plug in our values for V₁,T₁,and T₂ to this equation and solve for V₂, using L for volume and, importantly, kelvin for temperature. (kelvin is 273 + celsius).

[tex]\frac{0.675}{305} =\frac{V_{2} }{348} \\V_{2}=0.770 L[/tex]


Related Questions

7. 50 mL of an acetic acid (CH3CO2H, 60. 05 g/mole) stock solution was added to an analyte flask, along with 15 mL of water. 14. 36 mL of 0. 0915 M NaOH titrant was required to titrate the analyte solution to the endpoint. Calculate the concentration of the stock solution. Watch significant figures

Answers

The concentration of the stock solution is 0.183 M.

To solve this problem, we can use the equation:

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the NaOH titrant, and V2 is the volume of the titrant used.

First, we need to calculate the number of moles of NaOH used:

0.0915 M x 0.01436 L = 0.00131454 moles NaOH

Next, we can use the balanced chemical equation between acetic acid and NaOH to determine the number of moles of acetic acid present:

CH₃CO₂H + NaOH → NaCH₃CO₂ + H₂O1 mole of NaOH reacts with 1 mole of CH₃CO₂H0.00131454 moles NaOH x (1 mole CH₃CO₂H / 1 mole NaOH) = 0.00131454 moles CH₃CO₂H

Now we can calculate the concentration of the stock solution:

M1 = (0.00131454 moles / 0.050 L) / (1 mole / 60.05 g) = 0.183 M

Therefore, the concentration of the stock solution is 0.183 M.

To learn more about stock solution, here

https://brainly.com/question/25256765

#SPJ4

How many electrons are removed if you ionize one mole of hydrogen using 13. 598V

Answers

By considering the concept of Faraday's constant and Avogadro's number we can say that one mole of hydrogen is ionized at 13.598V, removing around 6.022 × 10²³ electrons.

To determine the number of electrons removed when ionizing one mole of hydrogen using 13.598V, we can use the formula:

N = (1 mole) * (Avogadro's number)

where N represents the number of particles (in this case, electrons) in one mole of the substance.

Avogadro's number is approximately 6.022 × 10²³ particles/mol.

Therefore, the number of electrons removed can be calculated as:

N = (1 mole) * (6.022 × 10²³ particles/mol)

= 6.022 × 10²³ electrons

Thus, when ionizing one mole of hydrogen using 13.598V, approximately 6.022 × 10²³ electrons are removed.

To know more about the Ionization refer here :

https://brainly.com/question/1602374#

#SPJ11  

Use the scenario to answer the question. a student is examining scientific evidence to support the following claim. ""life is possible because of the unique mixture of gases that cycle through the earth’s spheres."" which evidence best supports the student’s claim?

Answers

The evidence that best supports the student's claim that "life is possible because of the unique mixture of gases that cycle through the Earth's spheres" is the presence and balance of oxygen, nitrogen, and carbon dioxide in the atmosphere.

These gases play a crucial role in maintaining life on Earth by supporting respiration, regulating temperature, and enabling the carbon cycle, which allows organisms to exchange and utilize carbon for growth and energy production.

Oxygen: Oxygen is a vital gas for sustaining life on Earth. It is a key component of the atmosphere, making up about 21% of its composition. Oxygen is essential for respiration, the process by which organisms extract energy from food.

Through respiration, organisms break down glucose (derived from food) and use oxygen to produce energy-rich molecules called adenosine triphosphate (ATP).

This energy is necessary for cellular functions and metabolic activities. Many organisms, including humans, require oxygen to survive.

Nitrogen: Nitrogen is the most abundant gas in the Earth's atmosphere, accounting for approximately 78% of its composition. Although nitrogen is relatively inert and does not directly participate in biological processes, it is crucial for life.

Nitrogen is an essential component of amino acids, proteins, and nucleic acids (DNA and RNA), which are fundamental building blocks of life. Nitrogen fixation, a process carried out by certain bacteria, converts atmospheric nitrogen into forms that can be used by plants and other organisms.

This allows nitrogen to enter the food chain and support the growth and development of living organisms.

Carbon Dioxide: Carbon dioxide is a greenhouse gas and an integral part of the Earth's carbon cycle. It plays a significant role in regulating the planet's temperature through the greenhouse effect.

Carbon dioxide traps heat in the atmosphere, preventing excessive heat loss into space and maintaining a suitable temperature range for life. Additionally, carbon dioxide is essential for photosynthesis, a process carried out by plants and other autotrophic organisms.

During photosynthesis, carbon dioxide is absorbed, and with the help of sunlight, it is converted into glucose and oxygen. This process not only provides oxygen for respiration but also allows organisms to utilize carbon for growth, energy production, and the formation of organic compounds.

To learn more about glucose, refer below:

https://brainly.com/question/30548064

#SPJ11

How would you classify this reaction?
CF4 -> C+2F₂
A. redox
B. double replacement​

Answers

The reaction is a decomposition reaction

How to know the class of reaction

The given reaction is not a redox (oxidation-reduction) reaction because there is no change in oxidation number of any of the atoms in the reaction.

Also, it is not a double replacement reaction as there are no ions or compounds being exchanged between the reactants.

This is a decomposition reaction, where one compound (CF4) is breaking down into two simpler substances (C and F2).

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler substances. In a decomposition reaction, a compound is broken down into its constituent elements or simpler compounds.

The reaction can be represented by a chemical equation where the reactant is the compound that is breaking down, and the products are the simpler substances formed as a result of the reaction.

The general formula for a decomposition reaction is:

AB → A + B

where AB is the compound that is decomposing, and A and B are the simpler substances formed as a result of the reaction.

Learn more about decomposition reaction at

https://brainly.com/question/27300160

#SPJ1

In the late eighteenth century Priestley prepared ammonia by reacting HNO3(g) with hydrogen gas. The thermodynamic equation for the reaction is



HNO3(g) + 4H2(g) → NH3(g) + 3H2O(g) ΔH = –637 kJ


Calculate the amount of energy released when one mole of hydrogen gas reacts. Consider this to be a positive value

Answers

The thermodynamic equation for the reaction is:

[tex]HNO_3(g) + 4H_2(g)[/tex] → [tex]NH_3(g) + 3H_2O(g) \Delta H = -637 kJ[/tex]

This means that the reaction releases 637 kJ energy per mole ammonia produced. The amount of energy released when one mole of hydrogen gas reacts is 159.25 kJ,

However,  the amount of energy released when one mole of hydrogen gas reacts. From the balanced equation, we can see that one mole of ammonia is produced for every 4 moles of hydrogen gas that react. Therefore, the amount of energy released :

ΔH/4 = -637 kJ / 4 = -159.25 kJ

So, the amount of energy released when one mole hydrogen gas reacts is 159.25 kJ, and we consider this to be a positive value because the reaction is exothermic.

To know more about thermodynamic equations, here

brainly.com/question/30267158

#SPJ4

Typical household bleach has a ph of 13. what is the h3o concentration in household bleach?

Answers

A pH of 13 indicates a highly basic solution. To calculate the H3O+ concentration in household bleach, we can use the following formula:

pH = -log[H3O+]

Rearranging the formula, we get:

[H3O+] = 10^(-pH)

Substituting pH = 13 into the formula, we get:

[H3O+] = 10^(-13)

[H3O+] = 1 x 10^(-13) mol/L

Therefore, the H3O+ concentration in household bleach is approximately 1 x 10^(-13) mol/L.

To know more about indicates refer here

https://brainly.com/question/26097343#

#SPJ11

A neutralization reaction occurs between 150mL of a 2M sulfuric acid solution and as much potassium hydroxide as necessary.
a) formula and adjust the reaction
b) Calculate the mass of each of the products.
c) to obtain 250g of potassium sulfate, calculate the volume of 1.6M sulfuric acid solution needed.

Answers

a) The neutralization reaction between sulfuric acid and potassium hydroxide can be written as follows:

[tex]H_{2}SO_{4} + 2KOH - > K_{2}SO_{4} + 2H_{2}O[/tex]

b) Mass of [tex]K_{2}SO_{4}[/tex]= 104.6 g; mass of [tex]H_{2}O[/tex]= 5.4 g

c) Volume of 1.6 M [tex]H_{2}SO_{4}[/tex] needed to produce 250 g of [tex]K_{2}SO_{4}[/tex]= 0.896 L or 896 mL.

A neutralization reaction is a type of chemical reaction that occurs between an acid and a base, producing a salt and water as products. The reaction involves the transfer of hydrogen ions (H+) from the acid to the hydroxide ions (OH-) from the base.

The resulting salt is neutral because it is made up of cations from the base and anions from the acid. The reaction can be represented by the general equation: acid + base → salt + water.

Learn more about neutralization reaction, here:

https://brainly.com/question/23008798

#SPJ1

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

Answers

Answer: Reduction

Explanation: When an atom or ion experiences a decrease in its oxidation state, it gains electrons.

Blackworms were collected from an environment with an acidic pH, and the pulse rates were measured. Predict the outcome of the measurements. [2 pt] The pH of the nevironment would have no effect on pulse rate. The pulse rate would be increased to minimize the effects of acidosis. The pulse rate would be increased to minimize the effects of alkalosis. The pulse rate would be decreased to minimize the effects of acidosis

Answers

When blackworms are collected from an environment with an acidic pH, it is expected that (B) the pulse rate of the blackworms would increase to minimize the effects of acidosis.

Acidosis is a condition characterized by increased acidity in the body, which can disrupt normal cellular function. To counteract the detrimental effects of acidosis, organisms often respond by increasing their pulse rate. By doing so, blackworms can enhance the circulation of oxygen and nutrients, aiding in maintaining proper metabolic balance.

Therefore, option (b) "The pulse rate would be increased to minimize the effects of acidosis" is the most likely outcome in this scenario. This adaptive response helps blackworms cope with the acidic environment and maintain vital physiological processes.

To know more about the acidosis refer here :

https://brainly.com/question/31820827#

#SPJ11

If a person had 100 g of pure radioactive nuclei with a half-life of 100 years, then after 100 years he or she would have _____ of radioactive nuclei

Answers

After 100 years, a person who had 100 g of pure radioactive nuclei with a half-life of 100 years would have 50 g of radioactive nuclei left.

The half-life of a radioactive substance is the time it takes for half of the substance's original amount to decay. In this case, since the half-life is 100 years, after 100 years, half of the original amount of radioactive nuclei would have decayed.

After the first 100 years, 50 g of radioactive nuclei would remain, and the other 50 g would have decayed. If we wait for another 100 years, half of the remaining 50 g, which is 25 g, would decay, leaving only 25 g of the original amount. This process will continue until all the radioactive nuclei have decayed.

It's worth noting that the rate of decay is exponential, which means that the amount of radioactive substance remaining decreases at a constant rate over time. Knowing the half-life of a radioactive substance is important in determining the amount of time it takes for the substance to decay to a safe level.

To know more about radioactive nuclei refer to-

https://brainly.com/question/30304562

#SPJ11

1. when someone says, "i have a theory that excess salt causes high blood pressure," does that person really have a theory? if it is not a theory, what is it?

Answers

When someone says, "I have a theory that excess salt causes high blood pressure," they are expressing a hypothesis rather than a theory.

A hypothesis is a proposed explanation for a phenomenon that has not yet been extensively tested or widely accepted by the scientific community.

The connection between excess salt and high blood pressure is a well-studied topic. Excessive salt intake can cause the body to retain water, leading to an increase in blood volume. This increased volume puts additional pressure on blood vessels, resulting in high blood pressure (also known as hypertension).

Reducing salt intake can help manage high blood pressure, but other factors, such as genetics, age, and lifestyle choices, also contribute to the development of hypertension.

In summary, the statement "I have a theory that excess salt causes high blood pressure" is more accurately described as a hypothesis. However, it is worth noting that the relationship between excess salt and high blood pressure is well-established in medical research, making the hypothesis strongly supported by evidence.

To know more about hypothesis, visit:

https://brainly.com/question/29519577#

#SPJ11

The secondary structure of a protein molecule is the_____of the amino acid chains

Answers

Answer is: primary structure

How many grams of sodium sulfate are needed to prepare 750. ML of a


0. 375 M solution? (**Use only numerical answers with 3 significant figures.


The units are given in the question. )


Voir

Answers

We need 39.9 grams of sodium sulfate to prepare 750 mL of a 0.375 M solution.

Volume of the solution = 750 mL = 0.750 L
We know that, moles of solute = molarity × volume of solution (in L)

moles of sodium sulfate = 0.375 M × 0.750 L = 0.281 mol
Molar mass of sodium sulfate ([tex]Na_{2}SO_{4}[/tex])= (2 × 22.99 g/mol) + (4 × 16.00 g/mol) + (32.07 g/mol) = 142.04 g/mol
Therefore, grams of [tex]Na_{2}SO_{4}[/tex] = moles of [tex]Na_{2}SO_{4}[/tex] × molar mass of [tex]Na_{2}SO_{4}[/tex] = 0.281 mol × 142.04 g/mol = 39.9 g

We need 39.9 grams of sodium sulfate to prepare 750 mL of a 0.375 M solution.

To know more about molarity visit:

https://brainly.com/question/8732513

#SPJ11

Does just examining a substance tell you it will react with oxygen, acid, or fire? explain?

Answers

Examining a substance can provide some clues about its reactivity, but it is not enough to determine if it will react with oxygen, acid, or fire. The chemical properties of a substance, including its electron configuration, bonding, and polarity, determine its reactivity.

Some substances, such as alkali metals, are highly reactive with oxygen and water, while others, such as noble gases, are chemically inert. Substances with acidic properties can react with bases to form salts and water, while substances with basic properties can react with acids to form salts and water.

Flammable substances, on the other hand, have a high propensity to burn or ignite in the presence of a heat source or spark. Therefore, to determine the reactivity of a substance, it is important to consider its chemical properties and potential reactions with other substances.

To know more about the chemical properties refer here :

https://brainly.com/question/1935242#

#SPJ11

Given 425.0 mL of a gas at 12.0 °C. What is its volume at 6.0 °C?

Answers

The volume of the gas at 6.0 °C is 416.8 mL.

What is Charles Law?

The principle known as Charles law asserts that the volume of a given quantity of gas is directly proportional to its absolute temperature under constant pressure. This means that as the temperature increases, so does the volume of the gas. Conversely, when the temperature decreases, so does the volume. It's important to note that this relationship only holds true if pressure remains constant.

Equation:

Using Charles law

V1/T1 = V2/T2

Where:

V1 = initial volume of gas

T1 = initial temperature of gas

V2 = final volume of gas

T2 = final temperature of gas

Converting the initial and final temperatures from Celsius to Kelvin

T1 = 12.0 + 273.15 = 285.15 K

T2 = 6.0 + 273.15 = 279.15 K

Plugging in the values

V1/T1 = V2/T2

425.0 mL / 285.15 K = V2 / 279.15 K

V2 = (425.0 mL / 285.15 K) * 279.15 K

V2 = 416.8 mL (rounded to three significant figures)

To know more about Charles Law, click here

https://brainly.com/question/16927784

#SPJ1

Calculate the voltage generated by a hydrogen - oxygen fuel cell at 73.5°C
when the partial pressures of hydrogen and oxygen are 19.8 atm.

Answers

The voltage generated by a hydrogen-oxygen fuel cell at 73.5°C when the partial pressures of hydrogen and oxygen are 19.8 atm is 1.174 V.

The standard cell potential for the hydrogen-oxygen fuel cell is 1.23 V at 25°C. However, the Nernst equation takes into account the temperature and the partial pressures of the reactants. The Nernst equation is as follows:

Ecell = E°cell - (RT/nF)lnQ

where Ecell is the cell potential, E°cell is the standard cell potential, R is the gas constant (8.314 J/K/mol), T is the temperature in Kelvin, n is the number of electrons transferred in the reaction, F is the Faraday constant (96,485 C/mol), and Q is the reaction quotient.

To calculate Q, we need to know the concentrations of the reactants and products. In the case of a fuel cell, the reactants are the fuels, which are gases, and their concentrations are expressed as partial pressures. The reaction in a hydrogen-oxygen fuel cell is:

2H2 + O2 → 2H2O

The reaction quotient can be expressed as:

Q = (PH2)²(PO2)

where PH2 is the partial pressure of hydrogen and PO2 is the partial pressure of oxygen.

At 73.5°C, the temperature in Kelvin is 346.65 K. The partial pressures of hydrogen and oxygen are 19.8 atm. Substituting these values into the Nernst equation, we get:

Ecell = 1.23 V - (8.314 J/K/mol)(346.65 K/ (2*96,485 C/mol)) ln[(19.8 atm)²(19.8 atm)]

Ecell = 1.23 V - 0.056 V

Ecell = 1.174 V

For more such questions on fuel

https://brainly.com/question/29429802

#SPJ11

Consider the following reaction: 2fe3+(aq) + 2hg(l) + 2cl−(aq) → 2fe2+(aq) + hg2cl2(s). which species loses electrons?

Answers

In the reaction 2Fe3+(aq) + 2Hg(l) + 2Cl−(aq) → 2Fe2+(aq) + Hg2Cl2(s), the species that loses electrons is Hg(l).

Here, mercury (Hg) undergoes oxidation, changing from Hg(l) to Hg2Cl2(s), and in the process, it loses electrons to form a bond with Cl− ions.

Hg(0)     →        Hg(+1)    +      1 e-

And Iron undergoes reduction, Fe3+ (aq) accepts one electron to become Fe2+ (aq).

Fe(+3)    +      1 e-      →       Fe(+2)

To know more about oxidation and reduction, click below.

https://brainly.com/question/28216195?

#SPJ11

Constellations are not visible on Earth during the day because? a) the Earth is turned away from them b) the Sun's light makes them impossible to see c) the Earth is on the opposite side of the Sun d) the constellations have revolved to the other side of the Sun​

Answers

Answer: b

Explanation: because the light-scattering properties of our atmosphere spread sunlight across the sky. seeing the dim light of a distant star in the blanket of photons from our Sun becomes as difficult as spotting a single snowflake in a blizzard.

If sodium increases in the ecf, water will move from:.

Answers

If sodium increases in the extracellular fluid (ECF), water will move from the intracellular fluid (ICF) to the ECF through osmosis.

This is because sodium is an osmotically active particle, meaning that it affects the concentration of particles in a solution.

When the concentration of sodium in the ECF increases, it creates a hypertonic environment compared to the ICF, which is relatively hypotonic.

As a result, water will move from the hypotonic ICF to the hypertonic ECF in order to balance the concentration of particles between the two compartments.

This movement of water can lead to changes in cell volume and function, which is why maintaining proper electrolyte balance is important for normal cellular function.

To know more about extracellular fluid refer to-

https://brainly.com/question/29307524

#SPJ11

Assume a gallon of gasoline contains 2370. 0 grams of octane. How many grams of carbon dioxide would be


produced by the complete combustion of the octane in this gallon of gasoline?


In 2017, people in the US used about 143 billion gallons of gasoline. How many grams of carbon dioxide


were generated by the combustion of this gasoline, assuming the value you calculated in the first question


was accurate?

Answers

The complete combustion of one gallon of gasoline containing 2370.0 grams of octane produces 6888.2 grams of carbon dioxide.

In 2017, people in the US generated approximately 9.85 x 10¹⁴ grams of carbon dioxide by burning 143 billion gallons of gasoline.



1. Write the balanced chemical equation for the combustion of octane:
  2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

2. Determine the molecular weight of octane (C₈H₁₈) and carbon dioxide (CO₂):
  C₈H₁₈: (8 x 12.01) + (18 x 1.01) = 114.23 g/mol
 CO₂: (1 x 12.01) + (2 x 16.00) = 44.01 g/mol

3. Use stoichiometry to find the grams of CO₂ produced from the combustion of 2370.0 grams of octane:
  (2370.0 g octane) x (16 mol CO₂/ 2 mol octane) x (44.01 g CO₂ / mol CO₂) = 6888.2 g CO₂

4. Calculate the total grams of CO₂ generated by burning 143 billion gallons of gasoline in the US in 2017:
  (143 billion gallons) x (6888.2 g CO₂ / gallon) = 9.85 x 10¹⁴ grams of CO₂

To know more about balanced chemical equation  click on below link:

https://brainly.com/question/28294176#

#SPJ11

What is the volume occupied by 3.67 moles of h2 gas at stp? (hint: you do not need the molar mass to do this conversion because it is a gas) *

Answers

The volume occupied by 3.67 moles of H₂ gas at STP is 82.19 L.

To calculate the volume, we use the equation V = n × Vm, where V is the volume, n is the number of moles, and Vm is the molar volume of a gas at STP (22.4 L/mol). At STP (standard temperature and pressure), one mole of any gas occupies 22.4 L. Given that we have 3.67 moles of H₂ gas, we can calculate the volume as follows:

1. Identify the number of moles (n): 3.67 moles of H₂
2. Find the molar volume of a gas at STP (Vm): 22.4 L/mol
3. Use the equation V = n × Vm
4. Substitute the values: V = 3.67 moles × 22.4 L/mol
5. Calculate the volume: V = 82.19 L

Therefore, 3.67 moles of H₂ gas occupy 82.19 L at STP.

To know more about STP click on below link:

https://brainly.com/question/24050436#

#SPJ11

A 0. 218 g sample of impure magnesium hydroxide
(Mg(OH)2, 58. 32g/mol) was dissolved in 50. 00 mL
of 0. 120 M HCI. Back-titration of the excess acid
required 3. 76 mL of 0. 095 M NaOH. Calculate the
%purity of the Mg(OH)2
Mg(OH)2 + 2HCl â MgCl2 + 2H2O
HCI + NaOH â NaCl + H2O
A. 75. 5%
B. 5. 13%
C. 0. 16%
D. 0. 218%â

Answers

Therefore the correct answer is A. 75.5%. The %purity of the

[tex]Mg(OH)_2 + 2HCl + MgCl_2 + 2H_2O HCI + NaOH + NaCl + H_2O[/tex] is 75.5%.

First, we need to calculate the amount of [tex]HCl[/tex] that reacted with the [tex]Mg(OH)_2[/tex]:

0.120 mol/L [tex]HCl[/tex] x 0.0500 L = 0.00600 mol [tex]HCl[/tex]

From the balanced equation, we know that 1 mole of [tex]Mg(OH)_2[/tex] reacts with 2 moles of [tex]HCl[/tex], so:

0.00600 mol [tex]HCl[/tex] x (1 mol [tex]Mg(OH)_2[/tex] / 2 mol [tex]HCl[/tex]) = 0.00300 mol [tex]Mg(OH)_2[/tex]

Next, we need to calculate the amount of [tex]NaOH[/tex] used in the back-titration:

0.095 mol/L [tex]NaOH[/tex] x 0.00376 L = 0.0003572 mol [tex]NaOH[/tex]

Since the amount of [tex]NaOH[/tex] used is equal to the amount of excess [tex]HCl[/tex], we can use this value to calculate the amount of [tex]HCl[/tex] that reacted with the [tex]Mg(OH)_2[/tex]:

0.0003572 mol [tex]NaOH[/tex] x (1 mol [tex]HCl[/tex] / 1 mol [tex]NaOH[/tex]) = 0.0003572 mol [tex]HCl[/tex]

The amount of [tex]Mg(OH)_2[/tex] that reacted with the [tex]HCl[/tex] is therefore:

0.00300 mol - 0.0003572 mol = 0.00264 mol [tex]Mg(OH)_2[/tex]

The mass of the [tex]Mg(OH)_2[/tex] sample is:

218 g / 58.32 g/mol = 3.741 mol [tex]Mg(OH)_2[/tex]

Therefore, the percent purity of the [tex]Mg(OH)_2[/tex] is:

(0.00264 mol / 3.741 mol) x 100% = 0.0705 x 100% = 7.05%

Therefore the correct answer is A. 75.5%.

Learn more about Magnesium hydroxide at

brainly.com/question/21904397

#SPJ4

What are the oxidation states exhibited by c, si, ge, sn,pb

Answers

The oxidation states exhibited by C, Si, Ge, Sn, Pb are -4, +4, +2 or +4, +2 or +4, and +2 or +4, respectively.

The oxidation state, also known as the oxidation number, is a measure of the degree of oxidation of an atom in a chemical compound. The oxidation state can be determined by assigning electrons to each atom in a compound according to a set of rules.

In general, carbon (C) exhibits an oxidation state of -4 in compounds such as methane (CH₄), where it is bonded to four hydrogen atoms. Carbon can also exhibit positive oxidation states in compounds such as carbon dioxide (CO₂), where it is bonded to two oxygen atoms, and in carbonyl compounds, where it is bonded to a metal.

Silicon (Si), germanium (Ge), tin (Sn), and lead (Pb) all belong to the same group in the periodic table and therefore exhibit similar chemical properties. They can all exhibit positive oxidation states of +2 and +4. For example, silicon can exhibit an oxidation state of +4 in silicon dioxide (SiO₂) and +2 in silane (SiH₄). Germanium, tin, and lead also exhibit a similar range of oxidation states in their compounds.

To know more about oxidation states, refer here:

https://brainly.com/question/31688257#

#SPJ11

During an experiment, the percent yield of calcium chloride from a reaction was


80. 34%. Theoretically, the expected amount should have been 115 grams. What was


the actual yield from this reaction? (5 points)


CaCO3 + HCI - CaCl2 + CO2 + H2O


1) 90. 1 grams


2) 92. 4 grams


3) 109. 2 grams


4) 115. 3 grams

Answers

The actual yield from the reaction was 92.4 grams. The answer is 2)

To find the actual yield of calcium chloride from the reaction, we can use the percent yield formula:

Percent Yield = (Actual Yield / Theoretical Yield) x 100%

We know that the theoretical yield of calcium chloride is 115 grams, and the percent yield is 80.34%. Rearranging the formula to solve for actual yield, we get:

Actual Yield = (Percent Yield / 100%) x Theoretical Yield

Plugging in the given values, we get:

Actual Yield = (80.34% / 100%) x 115 grams

Simplifying and solving for actual yield, we get:

Actual Yield = 92.4 grams

Therefore, the actual yield from the reaction was 92.4 grams, which is the second option in the given choices, i.e., option 2.

To know more about actual yield, refer here:

https://brainly.com/question/21925098#

#SPJ11

Assume that a 0.35 um film of polysilicon over SiO2 is to be etched in a wet etch with a selectivity of 30. No more than 50 ? of SiO2 is to be removed. The etch uniformity is 10%. An additional overetch of 10% is required because of endpoint detection variation. (a) Can this be done? If so, what will be the required polysilicon uniformity in %? (Show your work) (b) What is the maximum polysilicon film thickness to make sure that no more than 50 A of SiO2 is removed? (Hint: assume perfectly uniform poly)

Answers

(a) To determine if this can be done, we need to calculate the maximum amount of polysilicon that can be etched while keeping the SiO2 removal below 50 Å.

Let's assume the initial thickness of SiO2 is 1000 Å. Since the selectivity is 30, the maximum amount of polysilicon that can be etched is:

50 Å * (1/30) = 1.67 Å

Now, taking into account the overetch of 10%, the total amount of polysilicon that can be etched is:

1.67 Å / (1-0.1) = 1.85 Å

So, we need to etch a maximum of 1.85 Å of polysilicon.

The total thickness of the polysilicon and SiO2 layers is:

0.35 um + 1000 Å = 1350 Å

To find the required polysilicon uniformity, we can use the following equation:

(1 - uniformity) * 0.35 um = 1.85 Å

Solving for uniformity, we get:

uniformity = 1 - (1.85 Å / 0.35 um) = 0.9947 or 99.47%

So, the required polysilicon uniformity is 99.47%.

(b) To find the maximum polysilicon film thickness, we can use the same approach as above.

Let's assume the initial thickness of SiO2 is 1000 Å. The maximum amount of polysilicon that can be etched is:

50 Å * (1/30) = 1.67 Å

The total thickness of the polysilicon and SiO2 layers cannot be less than:

1000 Å + 50 Å + 1.67 Å = 1051.67 Å

So, the maximum polysilicon film thickness is:

1051.67 Å - 1000 Å = 51.67 Å

Visit here to learn more about polysilicon brainly.com/question/31232203

#SPJ11

If 15.0 ml of a 0.300 m aluminum phosphate solution reacts with 180 mg of magnesium metal according to the following equation, what mass of aluminum metal will be produced?

Answers

The mass of aluminum metal produced when 15.0 mL of a 0.300 M aluminum phosphate solution reacts with 180 mg of magnesium metal is 15.60 mg.


1. First, find moles of aluminum phosphate using its concentration and volume: moles = M x V = 0.300 mol/L x 0.015 L = 0.0045 mol.


2. Next, convert the mass of magnesium metal to moles using its molar mass: moles = mass / molar mass = 180 mg / (24.31 g/mol x 1000 mg/g) = 0.00741 mol.


3. Now, find the limiting reactant by comparing the mole ratios: (0.0045 mol AlPO₄) / (2) < (0.00741 mol Mg) / (3), so aluminum phosphate is the limiting reactant.


4. Calculate the moles of aluminum produced using the mole ratio: moles of Al = 2 x 0.0045 mol AlPO₄ = 0.009 mol.


5. Finally, convert the moles of aluminum to mass: mass = moles x molar mass = 0.009 mol x 26.98 g/mol x 1000 mg/g = 15.60 mg.

To know more about limiting reactant click on below link:

https://brainly.com/question/14225536#

#SPJ11

A gas occupies 12.0 Lat 25°C. What is the volume at 333.0 °C?

Answers

The volume of the gas at 333.0°C is 24.5 L. To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas.

The combined gas law is expressed as:

(P₁V₁)/T₁ = (P₂V₂)/T₂

where P₁, V₁, and T₁ are the initial pressure, volume, and temperature of the gas, and P₂, V₂, and T₂ are the final pressure, volume, and temperature of the gas.

In this case, we know that the initial volume V₁ is 12.0 L and the initial temperature T₁ is 25°C. We want to find the final volume V₂ when the temperature is 333.0°C. We also know that the pressure remains constant.

To use the combined gas law, we need to convert the temperatures to the absolute scale (Kelvin) by adding 273.15 to each temperature. So, T₁ = 298.15 K and T₂ = 606.15 K.

Plugging in the values into the equation, we get:

(P₁V₁)/T₁ = (P₂V₂)/T₂

(P₁ x 12.0)/298.15 = (P₂ x V₂)/606.15

Since the pressure is constant, we can simplify the equation to:

V₂ = (P₁ x V₁ x T₂)/(T₁ x P₂)

Substituting the values, we get:

V₂ = (1 x 12.0 x 606.15)/(298.15 x 1)

V₂ = 24.5 L

Therefore, the volume of the gas at 333.0°C is 24.5 L.

To know more about combined gas law, visit:

https://brainly.com/question/30458409

#SPJ1

What can be concluded if the reaction quotient (Q) for the reaction is 21.3 and the Keg for the reaction is 50.0? [
Ha(g) + L(g) -› 2HI
a.
The reaction is at equilibrium.
b. The reaction is not at equilibrium and it will proceed toward the products.
c. The reaction is not at equilibrium and it will proceed toward the reactants. d.
None of the above can be concluded.

Answers

Since Q is less than K, the reaction will proceed towards products to reach equilibrium. So, the correct option is the reaction is not at equilibrium and it will proceed toward the products.

When the rates of forward and reverse reactions are equal, equilibrium is the condition where there is no overall change in the concentrations of reactants and products. When a system is in equilibrium, the concentrations of all reactants and products are constant over time, and the system appears to be in a state of rest. An equilibrium constant [tex](K_e_q)[/tex], which represents the ratio of the concentrations of products to reactants at equilibrium for a reaction, can be used to characterize the state of equilibrium.

Therefore, the correct option is B.

Learn more about equilibrium, here:

https://brainly.com/question/30694482

#SPJ1

How many grams of solute are needed to make 2. 50L of a 1. 75M solution of Ba(NO3)2

Answers

To make a 1.75 M solution of Ba(NO₃)₂ with a volume of 2.50 L, you will need 1141.72 grams of the solute.

Firstly, we need to understand that Molarity (M) is defined as the number of moles of solute per liter of solution. Thus, we can use the formula:

Molarity (M) = (Number of moles of solute) / (Volume of solution in liters)

We have been given the volume of the solution (V) as 2.50 L and the Molarity (M) as 1.75 M. We need to find out the number of moles of solute (n) required to prepare this solution.

Rearranging the above formula, we get:

Number of moles of solute = Molarity × Volume of solution in liters

Substituting the given values, we get:

Number of moles of solute = 1.75 mol/L × 2.50 L = 4.375 mol

The molecular weight of Ba(NO₃)₂ can be calculated by adding the atomic weights of its constituents, which are Ba=137.33 g/mol, N=14.01 g/mol, O=16.00 g/mol. Thus, the molecular weight of Ba(NO₃)₂ comes out to be:

Molecular weight of Ba(NO₃)₂ = (137.33 g/mol) + 2 × (14.01 g/mol + 3 × 16.00 g/mol) = 261.34 g/mol

Now we can use the formula:

Mass of solute (in grams) = Number of moles of solute × Molecular weight of solute

Substituting the values, we get:

Mass of solute (in grams) = 4.375 mol × 261.34 g/mol = 1141.72 g

To know more about Molarity, refer here:
https://brainly.com/question/31545539#
#SPJ11

What is the mass in grams are in 3. 45 x 10E24 atoms of carbon

Answers

The mass in grams of 3.45 x 10E24 atoms of carbon is 68.93 g.

To find the mass in grams of 3.45 x 10E24 atoms of carbon, we need to use the concept of atomic mass and Avogadro's number. The atomic mass of carbon is 12.01 g/mol, which means that one mole of carbon contains 6.022 x 10E23 atoms. This is known as Avogadro's number.

So, to find the mass of 3.45 x 10E24 atoms of carbon, we first need to convert the number of atoms to moles. We do this by dividing the given number of atoms by Avogadro's number:

3.45 x 10E24 atoms / 6.022 x 10E23 atoms/mol = 5.74 moles

Next, we can use the molar mass of carbon to find the mass of 5.74 moles of carbon:

5.74 moles x 12.01 g/mol = 68.93 g

Therefore, the mass in grams of 3.45 x 10E24 atoms of carbon is 68.93 g.

To know more about mass in grams refer here: https://brainly.com/question/4220551#

#SPJ11

Other Questions
8-40.For the triangle at right, write each of the following trigonometric ratios. The first one is done for you. Read this sentence from paragraph 7. People getting their first paved roads, safe water, electric lights, and refrigerators dont want to march backward any more than the West does. How does the author counter this opinion? Responses He outlines specific steps for how to consume less. He outlines specific steps for how to consume less. He includes statistics about water and electric usage. He includes statistics about water and electric usage. He quotes environmental experts from developing countries. He quotes environmental experts from developing countries. He provides examples of how humans have adapted in the past. base electronics has a piece of machinery that costs $400,000 and is expected to have a useful life of 5 years. residual value is expected to be $50,000. using the straight-line method, what is depreciation expense for the first year? He ________ sends information either directly to the smell-processing areas in the cortex or indirectly to the cortex by way of the thalamus. olfactory bulb hypothalamus corpus callosum limbic system P4 +O2> P2O3If there is 65. 1 g P4 and 34. 2 g O2, what is the Limiting Reactant? How much Productis formed (in grams)? Let R(x). C(x), and P(x) be, respectively, the revenue, cost, and profit, in dollars, tomi the production and sale of x items. I R(%) = 6x and C(X) = 0.001x^2 + 1 8x + 40.find each of the followinga) P(x)b) R(200). C(200), and P(200)c) R'(. C't and P'(x)d) R' (200). C'(200), and P' (200) Why porphyry copper is not generally found near areas where volcanic activity, often associated with plate collisions, has occurred in the past Can you provide an example of how computer programming is applied in real- world situations? A bag contains five red socks and eight blue socks. Lucky reaches into the bag and randomly selects two socks without replacement. What is the probability that Lucky will get different colored socks? Express your answer as a common fraction. I will give brainliest if you give a full explanation, I have the answer but I need to know HOW to solve the problem!!! PLEASE HELPBased on data taken from airline fares and distances flown, it is determined that the equation of the least-squares regression line is = 102. 50 + 0. 65x, where is the predicted fare and x is the distance, in miles. One of the flights was 500 miles and its residual was 115. 0. What was the fare for this flight?102. 50312. 50427. 50542. 50 Identify the similarties between an inducible operon and a repressible operon. 1. Identify one hot and one cold salad and tell me the ingredients for each explaining the quality factors applicable for each ingredient Explain why Stevenson believes Walter McMillan is innocent list all the reasons give textual evidence to support these reasons The elements of a media text are the used by the producers to achievetheir goals.O A. toolsOB. imagesOC. wordsO D. people A total asset turnover ratio of 4. 7 indicates that: ______________a. For every $1 in net sales, the firm acquired $4. 7 in assets during the period. B. For every $1 in assets, the firm produced $4. 7 in net sales during the period. c. For every $1 in assets, the firm earned gross profit of $4. 7 during the period. D. For every $1 in assets, the firm earned $4. 7 in net income. D. For every $1 in assets, the firm paid $4. 7 in expenses during the period 6. (2.5 pts) at the beginning of week 5, they broke up. jack wanted to run off to the city withdiane, but diane said he was crazy. unfortunately, their relationship ended. both wereangry with each other. suppose we could somehow quantify and measure anger. let'scall the units "anger units". on the day of the break-up, jack had 100 anger units. everyweek he lost 5% of his anger. recall that the growth factor needs to be the amount that"stays on" jack (not the 5% that "comes off" jack). for example, after 1 week, he had 95anger units. after 2 weeks he had 90.25 anger units, and so on. write an equation thatmodels jack's anger (let that be )) after t weeks. Need help!!!!! 10 pointsari has a big exam tomorrow, and he cant stop worrying about it. he decides to exercise and see if that takes his mind off it. he goes to the gym, but it is not really helping. he cant get into his exercise like he usually does, and he almost dropped a weight because he is so preoccupied. what should ari do?a. keep working out since that is important. b. find an exercise routine that requires less skill and do that. c. he should practice mindfulness and shut out all distractions. d. if he cant focus, he could hurt himself, so he should go home. please no links Kurts city took a survey about a plan for a new park. the city surveyed 3000 people. 53% of the people surveyed like the plan for the park. how many people like the plan? What was William Appleman Williams' approach to Cold War history?A. a traditional approachB. a revisionist approach C. an inquiry approach D. an imperialist approach The boy biked 600 m at a speed of 10 m/s, how long did it take him to bike the total distance?