Unit 4A Worksheet 5 Name______
Combined Gas Law II
Directions: Show all work for the calculations below in the spaces provided. Remember "show work" includes:
A - Write down data as you read the problem (1 points)
B - Write down the formula, cross out any values which remain constant under both conditions (1 point)
C - Substitute values into the formula (1 points)
D - Solve. Put box around answer with units. (2 points)
1. During an investigation 20 L of oxygen is collected at a temperature of 293 K and 750 mm Hg. What volume will the gas occupy at 273 K and 810 mm Hg?
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B. ______
C. ______
D.
2. An automobile tire has a pressure of 199 kPa at 20.0ºC. After driving, the tire temperature rises to 80.0ºC. What is the new pressure of the gas? Assume the volume remains constant.
A. ______
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B. ______
C. ______
D.
3. A sample of gas occupies 500 mL at a pressure of 1520 mm Hg. If the temperature remains constant, what volume will the sample occupy at standard pressure?
A. ______
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B. ______
C. ______
D.
4. A gas has a volume of 10.0 L. What volume will the gas occupy if the Kelvin
temperature is doubled at constant pressure?
A. ______
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B. ______
C. ______
D.
5. An emptied gasoline can containing residual gasoline vapors has been stored in a garage since the summer-when the temperature was 303 K and the pressure was 102 kPa. What would be the pressure of the gas in the can during the winter, when the temperature was 273 K?
A. ______
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B. ______
C. ______
D.
6. How much pressure is needed to compress 1000 mL of a gas originally at 1 atm to a volume of 50 mL at a constant temperature?
A. ______
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B. ______
C. ______
D.
7. A 9.75 L sample of a gas at STP is cooled until the volume reaches 5.50 L with a pressure of 1.2 atm. Calculate the final temperature.
A. ______
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B. ______
C. ______
D.