How many moles of gas are present at a pressure of 1.00 atm in a container that is 4.0 liters in a room that is 25°C? A) 0.013 mol
B) 1.9 mol
C) 0.16 mol
D) 6.1 mol

One mole of gas is in a 2.0 L container at 1.0 atm pressure and 20°C. If the volume is doubled, and the temperature remains constant, what will happen to the pressure?
A) The pressure will quadruple.
B) The pressure will double.
C) The pressure will decrease by half. D) The pressure will decrease by one-quarter.
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