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Gas Laws Quiz #1

8 Questions  I  By Robert Stine
Gas Laws Quiz #1
Quiz on gas laws # 1 includes questions on Boyle's Law. Charles' Law, Lussac's Law, and the Combined Gas Law. Identify the law you need to solve the problem and solve the problem. Use classroom rules for rounding and include units in your answer.

Example: If 6 liters of a gas at 2. 0 atm is compress the gas to have a new volume of 5 liters, what is the new pressure?

This is a Boyle's Law Problem so

P1V1 = P2V2
(2. 0)(6) = (P2)(5)
P2 = 2. 4

Express the answer as 2. 4 atm

Note rounding is important numbers greater than 1 are rounded to the tenths place (1 = 1. 0, 5. 85 = 5. 9 etc. . . ) and numbers less than 1 are rounded to one place after the first non zero (0. 000567 = 0. 00057, 02875 = 0. 29)

Units are expressed after the number as above. I
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Question Excerpt

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1.  A gas has a starting pressure of 780mm-Hg and 70 degrees Celsius, with an unknown starting volume. The gas is able to expand and it’s final volume was 100 ml, the final pressure was 750mm-Hg and the final temp was 50 degrees Celsius. What was the initial volume in mL?
2.  The temperature of a 10 L sample of gas is at 500 degrees kelvin and lowers to 300 degrees kelvin, What will the volume of the gas be if the pressure remains at a constant of 150 kPa?
3.  At 200 degrees Celsius a gas has a volume of 380ml. What will the volume be in mL at 300 degrees Celsius ( pressure remains constant).
4.  400L of gas is stored at 100 degrees Celsius at a pressure of 709kPa. The gas is moved to a tank that is 20 degrees Celsius cooler and the pressure of the tank is 3000kPa. What is the volume of the gas in L?
5.  . A gas occupies 15 L at a pressure of 5 atm. What is the volume when the pressure is increased to 10 atm but the temperature remains at 273 degrees kelvin?
6.  A gas is cooled from 350 to 300  degrees kelvin, with a constant volume of 5L. What would the final pressure of the gas be in mm-Hg if the initial pressure measures at 850 mm-hg?
7.  What will the pressure be in atm when a gas at 7 atm is heated from 15 to 30 degrees Celsius, if the volume stays at a constant 5L?
8.  A sample gas occupies 0.5 liters at 30 degrees Celsius and 2000 mm - Hg. What is the temperature in Kelvin at which the gas will occupy 1 liter at 2280 mm-Hg
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