Question

the volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure when its volune is changed to 2.00 L

Answer 1

P1V1 = P2V2
P1 = 1.00 atm, V1 = 450 mL × (1L)/(1000mL) = 0.45 L, P2 = 2.00 atm
(1)(0.45) = (2)V2
V2 = .45/2 = 0.225 L, or 225 mL