Question 1

At STP, how many moles of helium gas would occupy 1.00 L?

Accepted Answer

A)  224 moles
B)  2.24 moles
C)  0.0446 moles
D)  0.446 moles
E)  22.4 moles

Question 2

At STP, what is the volume of 4.50 moles of nitrogen gas?

Accepted Answer

A)  3420 L
B)  1230 L
C)  60.7 L
D)  101 L
E)  167 L

Question 3

In a gas mixture, the partial pressures are:   76.0  torr,  He 230 mmHg , and   0.640 atm. The total pressure in mmHg  is

Accepted Answer

A)    792 mmHg
B)    306 mmHg
C)    760 mmHg
D)    562 mmHg
E)    486 mmHg

Question 4

The temperature of a  350 mL sample of gas increases from 
What is the final volume of the sample of gas, if the pressure and amount of gas in the container is kept constant?

Accepted Answer

A)    41.6 mL
B)    2940 mL
C)    583 mL
D)   110.  mL
E)    210 .mL

Question 5

The force of the collisions of gas particles against the walls of a container is called

Accepted Answer

A)  quantity of gas.
B)  temperature.
C)  volume.
D)  density.
E)  pressure.

Question 6

When  25.0 g of  Zn reacts, how many L of  gas are formed at  and a pressure of  854 mmHg?

Accepted Answer

A)  22.4 L
B)  8.32 L
C)  0.120 L
D)  0.382 L
E)  8.56 L

Question 7

2 gas are formed at STP? A) 0.382 L B) 22.4 L C) 0.0171 L D) 8.56 L E) 4.28 L" class="answers-bank-image d-inline" rel="preload" > When 25.0 g of Zn reacts, how many L of H2 gas are formed at STP?

Accepted Answer

A)  0.382 L
B)  22.4 L
C)  0.0171 L
D)  8.56 L
E)  4.28 L

Question 8

What is the pressure, in mmHg, of a  4.00 g sample of  gas, which has a temperature of  and a volume of  3.00 L?

Accepted Answer

A)    78.0 mmHg
B)    0.788 mmHg
C)    7880 mmHg 
D)    1.04 mmHg 
E)    788 mmHg

Question 9

A gas sample in a closed, expandable container of initial volume  5.00 L was allowed to warm from   at constant amount of gas and pressure. What was its new volume?

Accepted Answer

A)    4380 L
B)    7.00 L
C)    3.57 L
D)    4.84 L
E)    5.17 L

Question 10

The use of high-pressure chambers to control disease processes is known as ________.

Accepted Answer

The answer of The use of high-pressure chambers to control...

Question 11

The pressure unit 1 mmHg is the same pressure unit as the pressure unit ________.

Accepted Answer

The answer of The pressure unit 1 mmHg is the...

Question 12

What is the mass of a sample of O2 gas, which has a pressure of 740. mmHg, at a temperature of 25 °C, in a volume of 250. mL?

Accepted Answer

A)  320. g
B)  292 g
C)  0.318 g
D)  201 g
E)  3.82 g

Question 13

What is the mass of neon that exerts a pressure of 720. mmHg, with a temperature of -15.0 °C , when the volume of the container is 760. mL?

Accepted Answer

A)  0.0340 g
B)  0.615 g
C)  0.686 g
D)  517 g
E)  25.8 g

Question 14

At STP,  11 g of  has a volume of

Accepted Answer

A)    3.8 L .
B)    130 L.
C)    22 L.
D)    0.0076 L.
E)    250 L.

Question 15

The volume of a gas with an initial pressure of 380 mmHg atm increases from 5.0 L to 8.0 L. What is the final pressure of the gas, in atm, assuming no change in amount of gas or temperature?

Accepted Answer

A)  2.4 atm
B)  0.31 atm
C)  240 atm
D)  8.0 atm
E)  0.80 atm

Question 16

Boyle's law is usually written as ________.

Accepted Answer

The answer of Boyle's law is usually written as ________....

Question 17

At STP, what is the mass of 11.2 liters of O2 gas?

Accepted Answer

A)  32.0 g
B)  128 g
C)  16.0 g
D)  64.0 g
E)  8.00 g

Question 18

A balloon is filled with helium gas. For the question(s) that follow, select the letter of the balloon diagram that corresponds to the given
change in conditions. 
-The balloon is put into a chamber whose pressure is less than the atmospheric pressure and at atmospheric temperature.

Accepted Answer

A)  A
B)  B
C)  C
D)  A and B
E)  B and C

Question 19

According to Gay-Lussac's Law, the pressure of a gas increases due to an increase in temperature because

Accepted Answer

A)  the molecules strike the walls of the container more often and with more force.
B)  there is an increase in the number of gas particles.
C)  there is a decrease in the volume of the container.
D)  the molecules strike the walls of the container less often and with less force.
E)  the molecules get bigger.

Question 20

Complete the following statement: According to Charles's Law, the volume of a gas ________ when the ________ decreases.

Accepted Answer

A)  increases; temperature
B)  increases; quantity of gas
C)  decreases; temperature
D)  decreases; pressure
E)  increases; pressure

Exam 8: Gases

At STP, how many moles of helium gas would occupy 1.00 L?

Correct AnswerverifiedShow Answer

The temperature of a 350 mL sample of gas increases from What is the final volume of the sample of gas, if the pressure and amount of gas in the container is kept constant?

Correct AnswerverifiedShow Answer

A balloon is filled with helium gas. For the question(s) that follow, select the letter of the balloon diagram that corresponds to the given change in conditions. -The balloon is put into a chamber whose pressure is less than the atmospheric pressure and at atmospheric temperature.

Correct AnswerverifiedShow Answer

The pressure unit 1 mmHg is the same pressure unit as the pressure unit ________.

Correct AnswerverifiedShow Answer

What is the pressure, in mmHg, of a 4.00 g sample of gas, which has a temperature of and a volume of 3.00 L?

Correct AnswerverifiedShow Answer

What is the mass of neon that exerts a pressure of 720. mmHg, with a temperature of -15.0 °C , when the volume of the container is 760. mL?

Correct AnswerverifiedShow Answer

What is the mass of a sample of O2 gas, which has a pressure of 740. mmHg, at a temperature of 25 °C, in a volume of 250. mL?

Correct AnswerverifiedShow Answer

At STP, what is the volume of 4.50 moles of nitrogen gas?

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The force of the collisions of gas particles against the walls of a container is called

Correct AnswerverifiedShow Answer

A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from at constant amount of gas and pressure. What was its new volume?

Correct AnswerverifiedShow Answer

In a gas mixture, the partial pressures are: 76.0 torr, He 230 mmHg , and 0.640 atm. The total pressure in mmHg is

Correct AnswerverifiedShow Answer

Complete the following statement: According to Charles's Law, the volume of a gas ________ when the ________ decreases.

Correct AnswerverifiedShow Answer

Boyle's law is usually written as ________.

Correct AnswerverifiedShow Answer

The use of high-pressure chambers to control disease processes is known as ________.

Correct AnswerverifiedShow Answer

According to Gay-Lussac's Law, the pressure of a gas increases due to an increase in temperature because

Correct AnswerverifiedShow Answer

At STP, 11 g of has a volume of

Correct AnswerverifiedShow Answer

When 25.0 g of Zn reacts, how many L of H2 gas are formed at STP?

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The volume of a gas with an initial pressure of 380 mmHg atm increases from 5.0 L to 8.0 L. What is the final pressure of the gas, in atm, assuming no change in amount of gas or temperature?

Correct AnswerverifiedShow Answer

When 25.0 g of Zn reacts, how many L of gas are formed at and a pressure of 854 mmHg?

Correct AnswerverifiedShow Answer

At STP, what is the mass of 11.2 liters of O2 gas?

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What is the mass of a sample of O₂ gas, which has a pressure of 740. mmHg, at a temperature of 25 °C, in a volume of 250. mL?

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Complete the following statement: According to Charles's Law, the volume of a gas when the decreases.

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When 25.0 g of Zn reacts, how many L of H₂ gas are formed at STP?

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At STP, what is the mass of 11.2 liters of O₂ gas?

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