Question 1

Which of the following statements best describes the function of a barometer?

Accepted Answer

It measures atmospheric pressure by the height of mercury displaced.

Question 2

A pressure of 49 torr is equivalent to which of the following values in atmospheres?

Accepted Answer

0.064

Question 3

According to Boyle's Law, what happens to the volume of a gas if the pressure is doubled at constant temperature?

Accepted Answer

The volume is halved.

Question 4

A sample of gas at 15°C and 1 atm has a volume of 2.58 L. What will its volume be at 38°C and 1 atm?

Accepted Answer

2.98 L

Question 5

Which of the following is the correct value for the universal gas constant R when using liters, atmospheres, moles, and kelvin?

Accepted Answer

0.0821&#xA0;L&#xA0;atm/mol&#xA0;K

Question 6

If a balloon is squeezed and its volume decreases, what happens to the pressure inside the balloon according to Boyle's Law?

Accepted Answer

Pressure increases.

Question 7

A sample of hydrogen gas occupies a volume of 8.56 L at 0°C and a pressure of 1.58 atm. How many moles of hydrogen are present?

Accepted Answer

0.499 mol

Question 8

Which of the following best explains why atmospheric pressure is lower at higher altitudes?

Accepted Answer

There are fewer air molecules exerting force on surfaces.

Question 9

Which law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure?

Accepted Answer

Avogadro's Law

Question 10

A sample of methane gas with a volume of 38 mL at 5°C is heated to 86°C at constant pressure. What is its new volume?

Accepted Answer

49 mL

Question 11

Which of the following is NOT a unit of pressure commonly used in chemistry?

Accepted Answer

joule

Question 12

What is the value of standard atmospheric pressure in mm Hg?

Accepted Answer

760 mm Hg

Question 13

Which equation represents the Ideal Gas Law?

Accepted Answer

PV=nRT

Question 14

If the temperature of a gas is increased at constant pressure, what happens to its volume according to Charles' Law?

Accepted Answer

Volume increases.

Question 15

A sample of nitrogen gas occupies 0.845 mol at 315 K and 0.920 atm. What is its volume?

Accepted Answer

23.8 L

Question 16

Which of the following is a correct conversion factor for pressure?

Accepted Answer

1&#xA0;atm=760&#xA0;torr

Question 17

Which of the following scenarios best illustrates Avogadro's Law?

Accepted Answer

Adding more moles of gas to a container increases its volume at constant temperature and pressure.

Question 18

A sample of O₂ gas contains 0.50 mol at 1 atm and 25°C. If all the O₂ is converted to O₃ at the same temperature and pressure, what would be the volume of the ozone?

Accepted Answer

8.13 L

Question 19

Which of the following is a correct statement about the relationship between temperature and kinetic energy?

Accepted Answer

As temperature increases, the average kinetic energy of gas molecules increases.

Gas Laws and Properties: General Chemistry Study Notes

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