Gas Laws and Solutions

If the volume of a gas increases what will happen to the pressure?

• Pressure increases

• Pressure decreases

• Pressure stays the same

• Can not be determined

If the temperature of a gas decreases, what will happen to the volume?

• Volume increases

• Volume decreases

• Volume stays the same

• Can not be determined

If the pressure of a gas decreases due to a change in temperature, what happened to the temperature?

• The temperature went up

• The temperature went down

• The temperature stayed the same

• Can not be determined

The pressure of a gas is 9.99 atm with a volume of 4.00 liters. If the volume of the gas expands to 7.73 liters, what is the new pressure?

• 12.8 atm

• 8.44 atm

• 5.17 atm

• 4.88 atm

The pressure of a gas is 45.3 kPa at a temperature of 133 degrees kelvin. What is the new pressure if the temperature is increased to 178 degrees kelvin?

• 60.6 kPa

• 23.4 kPa

• 83.2 kPa

• 101 kPa

A gas has a volume of 44.0 liters at a temperature of 400 degrees kelvin. If the volume of the gas changes to 23.0 liters due to a change in temperature, what is the new temperature?

• 166 degrees kelvin

• 375 degrees kelvin

• 311 degrees kelvin

• 209 degrees kelvin

A sample of bromine gas has a volume of 0.850 liters with a pressure of 29.9 kPa and a temperature of 340 degrees kelvin. If the temperature of the sample of gas changes to 370 kelvin and the volume changes to 1.20 liters, what is the new pressure?

• 32.2 kPa

• 45.0 kPa

• 23.0 kPa

• 26.5 kPa

A gas in a container has a pressure of 2.08 atm and a volume of 15.5 liters at a temperature of 395 degrees kelvin. How many moles of gas are present?

• 0.994 moles

• 3.05 moles

• 1.34 moles

• 0.665 moles

25.0 moles of hydrogen gas occupy a 350 liter container at a temperature of 299 degrees kelvin. What is the pressure of this gas, in kPa?

• 199 kPa

• 178 kPa

• 123 kPa

• 98.5 kPa

What is the molarity of a solution containing 34 moles of solute in 198 liters of solution?

• 0.17 M

• 1.7 M

• 17 M

• 14.6 M

• 1.46 M