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Topic 1 – Matter and Energy
32. Gas Law at Constant Volume: Recalling concept facts
1. At constant volume , the pressure of a confined gas varies
1) Indirectly with the mass of the gas 3) Directly with the mass of the gas
2) Directly with the Kelvin temperature 4) Indirectly with the Kelvin temperature
2. At constant volume , as temperature of a gas in a closed cylinder increases, the pressure of the gas
1) Remains the same 2)Decreases 3) Increases
3. At constant volume, as the Kelvin temperature of a gas in a cylinder is decreased by half, the pressure
on the gas will
1) Increase by 2 times 2) Increase by 4 times 3) Decrease by half 4) Remain the same
4. A gas is at STP. If the volume of the gas is held constant while the pressure of the gas is doubled, the
new temperature of the gas will be
1) Four times as great 2) One-fourth as much 3) Half as much 4) Twice as much Need Help? Study Book Pg 23 Set 34
5. Which graph best illustrates the relationship between the Kelvin temperature of a gas and the
pressure on the gas when the volume of the gas is held constant?
1) 2) 3) 4)
33. Gas Law at Constant Volume: Pressure – Temperature calculations
1. A gas sample at 546 K has a pressure of 0.4 atm. If the volume of the gas sample is unchanged, what
will
be the new pressure of the gas if its temperature is changed 136.5 K ?
1) 0.4 atm 2) 0.8 atm 3) 0.1 atm 4) 0.2 atm
2. Helium gas is at a pressure of 50 kPa and at a temperature of 300 K. What will be the temperature of
gas if the pressure is changed to 120 kPa at constant volume?
1) 720 K 2) 125 K 3) 20 K 4) 250 K Need Help? Study Book Pg 25 Set 41
3. A sample of CO2 is at STP. If the volume of the CO2 gas remains constant and its temperature is
o
changed to 45 C, what will be the new pressure of the gas?
1) 90.1 kPa 2) 101.3 kPa 3) 591 kPa 4) 118 kPa
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 141
Topic 1 – Matter and Energy
32. Gas Law at Constant Volume: Recalling concept facts
1. At constant volume , the pressure of a confined gas varies
1) Indirectly with the mass of the gas 3) Directly with the mass of the gas
2) Directly with the Kelvin temperature 4) Indirectly with the Kelvin temperature
2. At constant volume , as temperature of a gas in a closed cylinder increases, the pressure of the gas
1) Remains the same 2)Decreases 3) Increases
3. At constant volume, as the Kelvin temperature of a gas in a cylinder is decreased by half, the pressure
on the gas will
1) Increase by 2 times 2) Increase by 4 times 3) Decrease by half 4) Remain the same
4. A gas is at STP. If the volume of the gas is held constant while the pressure of the gas is doubled, the
new temperature of the gas will be
1) Four times as great 2) One-fourth as much 3) Half as much 4) Twice as much Need Help? Study Book Pg 23 Set 34
5. Which graph best illustrates the relationship between the Kelvin temperature of a gas and the
pressure on the gas when the volume of the gas is held constant?
1) 2) 3) 4)
33. Gas Law at Constant Volume: Pressure – Temperature calculations
1. A gas sample at 546 K has a pressure of 0.4 atm. If the volume of the gas sample is unchanged, what
will
be the new pressure of the gas if its temperature is changed 136.5 K ?
1) 0.4 atm 2) 0.8 atm 3) 0.1 atm 4) 0.2 atm
2. Helium gas is at a pressure of 50 kPa and at a temperature of 300 K. What will be the temperature of
gas if the pressure is changed to 120 kPa at constant volume?
1) 720 K 2) 125 K 3) 20 K 4) 250 K Need Help? Study Book Pg 25 Set 41
3. A sample of CO2 is at STP. If the volume of the CO2 gas remains constant and its temperature is
o
changed to 45 C, what will be the new pressure of the gas?
1) 90.1 kPa 2) 101.3 kPa 3) 591 kPa 4) 118 kPa
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 141
