AP Chemistry Gas Laws

Front

According to kinetic molecular theory, in which of the following gases will the root mean square speed of the molecules be the highest at 200ºC? Options: SF₆, H₂O, HCl, Cl₂, None, the molecules of all gases have the same root mean square speed at any given temperature.

Back

H₂O

Front

A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10.0 L to 15.0 L. The final pressure is ___ atm.

Back

0.67 atm

Front

A sample of He gas (2.35 mol) occupies 57.9 L at 300.0 K and 1.00 atm. The volume of this sample is ___L at 423 K and 1.00 atm.

Back

81.6 L

Front

The density of N₂O at 1.52 atm and 45.2ºC is ____ g/L.

Back

2.58 g/L

Front

The volume of a sample of gas (2.49 g) is 752 mL at 1.98 atm and 62ºC. What is the gas? Options: NO₂, SO₃, SO₂, Ne, NH₃

Back

NO₂

Front

Pressure in a 12.2 L vessel with 2.34 g CO2, 1.73 g SO2, 3.33 g Ar at 42ºC is ____ mmHg.

Back

263 mmHg

Front

Gases generally have

Back

low density

Front

Pressure is

Back

defined as the force per unit area

Front

A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6°C. Determine the temperature at which the volume of the gas is 3.42 L.

Back

278K

Front

A balloon has a volume of 2.32 liters at 24.0°C. The balloon is heated to 48.0°C. Calculate the new volume of the balloon.

Back

2.51L