Fort Chem On-line Quiz - Gas Laws

1 If the volume of a confined gas is doubled while the temperature remains constant, what change would be observed in the pressure?

2 Which of the following has the most molecules?

3 If 5.42 L of or measured at 735 torr and 23 C is heated to 35 C in the same container, what is the new pressure?

4 An air compressor reduced a sample of helium originally at 254 C and 740 torr to 6.75 L at 42.0 atm and 85 C. What was the original volume of the helium?


5 At what temperature will 65.3 g of CO2 exert a pressure of 815 torr in a 20.0 L cylinder?


6 What volume will a mixture of 0.200 mol nitrogen and 0.500 mol He occupy at 0.944 atm and 15 C?


7 What pressure is exerted by 82.5 g of CH4 in a 75.0 L container at 35.0 C?

8 Which of the following has the greatest density at 0 C and 1 atm?

9 At what temperature will the density of argon be 2.66 g/L when the pressure is 1.32 atm?

10 What is the molar mass of a gas which has a density of 1.83 g/L, measured at 27 C and 0.538 atm?

11 What is the molecular formula of a gas that exerts a pressure of 680 torr at 27 C and has a density of 1.60g/L at 27 C?

12 What volume of oxygen, collected at 22.0 C and 728 mm Hg would be produced by the decomposition of 8.15 g of KClO3?
     
   

KClO3 ==> KCl + O2


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