Spring Practice Chemistry Final

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Spring Practice Final 2011

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

____1.The volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L? a.| 0.5 atm| c.| 0.20 atm|
b.| 5.0 atm| d.| 800 atm|

____2.The pressure of a sample of helium is 2.0 atm in a 200-mL container. If the container is compressed to 10 mL without changing the temperature, what is the new pressure? a.| 200 atm| c.| 100 atm|

b.| 0.10 atm| d.| 40. atm|

____3.A sample of argon gas at standard pressure occupies 1000. mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800. mm Hg? a.| 500. mL| c.| 950. mL|

b.| 760. mL| d.| 1053. mL|

____4.A sample of gas collected at 750. mm Hg occupies 250. mL. At constant temperature, what pressure does the gas exert if the volume increases to 300. mL? a.| 50. mm Hg| c.| 625. mm Hg|

b.| 550. mm Hg| d.| 900. mm Hg|

____5.At 710. mm Hg, a sample of nitrogen gas occupies 625 mL. What volume does the gas occupy if the temperature remains constant and the pressure increases to 760. mm Hg? a.| 135 mL| c.| 600 mL|

b.| 584 mL| d.| 669 mL|

____6.A 425 mL sample of gas is collected at 780. mm Hg. If the temperature remains constant and the pressure falls to 680. mm Hg, what is the new volume? a.| 325 mL| c.| 488 mL|
b.| 370 mL| d.| 525 mL|

____7.The volume of a gas is 5.0 L when the temperature is 5.0ºC. If the temperature is increased to 10.0ºC without changing the pressure, what is the new volume? a.| 2.5 L| c.| 5.1 L|
b.| 4.8 L| d.| 10.0 L|

____8.At 7.0ºC, the volume of a gas is 49 mL. At the same pressure, its volume is 74 mL at what temperature? a.| 3.0ºC| c.| 120ºC|
b.| 16ºC| d.| 150ºC|

____9.The volume of a gas is 93 mL when the temperature is 91ºC. If the temperature is reduced to 0ºC without changing the pressure, what is the new volume of the gas? a.| 70 mL| c.| 120 mL|

b.| 100 mL| d.| 273 mL|

____10.The volume of a gas is 400. mL at 30.0ºC. If the temperature is increased to 50.0ºC without changing the pressure, what is the new volume of the gas? a.| 375 mL| c.| 426 mL|
b.| 400 mL| d.| 600 mL|

____11.If a gas occupies 950.0 mL at standard temperature, what volume does it occupy at 25.00ºC if the pressure remains constant? a.| 870.0 mL| c.| 1000.0 mL|
b.| 966.0 mL| d.| 1037 mL|

____12.If the temperature of 50.0 L of a gas at 40.0ºC falls by 10.0Cº, what is the new volume of the gas if the pressure is constant? a.| 45.0 L| c.| 52.0 L|
b.| 48.4 L| d.| 55.0 L|

____13.On a cold winter morning when the temperature is –13ºC, the air pressure in an automobile tire is 1.5 atm. If the volume does not change, what is the pressure after the tire has warmed to 15ºC? a.| –1.5 atm| c.| 3.0 atm|

b.| 1.7 atm| d.| 19.5 atm|

____14.The pressure of a sample of gas of constant volume is 2.0 atm at 30.ºC. What is the pressure of this sample at 20.ºC? a.| 1.0 atm| c.| 2.1 atm|
b.| 1.9 atm| d.| 20 atm|

____15.The pressure of a 1000. mL sample of gas at 10.0ºC increases from 700. mm Hg to 900. mm Hg. If the volume is unchanged, what is the new temperature? a.| 0ºC| c.| 30ºC|
b.| 24ºC| d.| 91ºC|

____16.The pressure of a sample of gas at a constant volume is 8.0 atm at 70.ºC. What is the pressure at 20.ºC? a.| 0.16 atm| c.| 9.4 atm|
b.| 6.8 atm| d.| 58 atm|

____17.The temperature of a sample of gas at 4.0 atm and 15.ºC increases to 30.ºC. If the volume is unchanged, what is the new gas pressure? a.| 3.8 atm| c.| 8 atm|
b.| 4.2 atm| d.| 19 atm|

____18.The pressure of a sample of gas increases from 450. mm Hg to 500. mm Hg. If the volume is constant and the...
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