Combined Gas Law Worksheet

```Combined Gas Law Worksheet
Show your work! The numerical answers (before rounding for significant digits) are at the bottom
– they are just for you to check yourself, I still need to see all your work.
1. I have an unknown volume of gas at a pressure of 0.5 atm and a temperature
of 325 K. If I raise the pressure to 1.2 atm, decrease the temperature to 320
K, and measure the final volume to be 48 liters, what was the initial volume of
the gas?
2. A toy balloon has an internal pressure of 1.05 atm and a volume of 5.0 L. If
the temperature where the balloon is released is 200 C, what will happen to
the volume when the balloon rises to an altitude where the pressure is 0.65
atm and the temperature is –150 C?
3. A small research submarine with a volume of 1.2 x 105 L has an internal
pressure of 1.0 atm and an internal temperature of 15&deg; C. If the submarine
descends to a depth where the pressure is 150 atm and the temperature is 3
&deg;C, what will the volume of the gas inside be if the hull of the submarine
breaks?
4. A gas that has a volume of 28 liters, a temperature of 45 &deg;C, and an unknown
pressure has its volume increased to 34 liters and its temperature decreased
to 35 &deg;C. If I measure the pressure after the change to be 2.0 atm, what was
the original pressure of the gas?
1) 117
2) 7.112
3) 766.667
4) 2.5074
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Gay-Lussac’s Law Worksheet
Show your work! The numerical answers (before rounding for significant digits) are at the bottom
– they are just for you to check yourself, I still need to see all your work.
5. If a gas has a pressure of 450 mm Hg and a volume of .250 L at a
temperature of 22.0˚C, what would the new temperature be at 760 mm Hg?
6. A sample of O2 under 2.00 atm occupies 500 ml at 25.0˚C.
A) What pressure will the sample have at 0.0˚C ?
B) What temperature will be needed to produce a pressure of 4.00 atm?
7. A gas has a pressure of 794 mmHg at 43.0 &deg;C. What is the temperature at
standard pressure?
8. A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 &deg;C is placed
inside an oven whose temperature is 50.0 &deg;C. The pressure inside the
container at 20.0 &deg;C was at 3.00 atm. What is the pressure of the nitrogen
after its temperature is increased?
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