Gas Laws Quiz #1

8 Questions  I  By Robert Stine
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 = 2.4Express the answer as 2.4 atmNote 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. Include a space in between the number and the unit. 2.4 atm not 2.4atm.You can miss 1 question and earn the Certificate of Achievement.

  
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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.  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?
3.  A gaseous sample of carbon dioxide occupies a volume of 3.27 L at a temperature of 20 degrees Celsius. If the pressure remains constant, what is the temperature in Kelvin if the volume lowers to 3L?
4.  A gas occupies 10 L at an unknown pressure. What is the initial pressure, if the final volume is 5L and the pressure is 5atm?
5.  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?
6.  A gas has a volume of 10L at - 100 degrees Celsius and .94atm. What would the volume of the gas be in L if the temperature increased to 100 degrees Celsius and the pressure to 1 atm?
7.  A gas occupies 15 L at a pressure of 80 mm-Hg. What is the volume when the pressure is increased to 525 mm-Hg?
8.  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?
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