Consider a simple cylinder and piston used to perform experiments on gases. The trapped volume under the piston contains 4.65 g of argon gas. Assume the Ar to be ideal in answering parts a-d below. For part e, assume the Ar obeys a van der Waals equation of state.
a. When the pressure applied by the piston on the gas is 0.951 atm at a temperature of 25.0°C, what is the trapped volume of the Ar?
b. If the pressure on the cylinder is increased to 5.30 atm and the temperature is maintained constant, what will be the new volume of the gas?
c. Keeping the pressure constant at 5.30 atm, the gas is heated until the total volume of the gas is 2.00 L. What is the temperature of the gas?
d. The gas is cooled back to 25.0°C and at the same time the pressure is decreased. The volume is now measured to be 4.48L. What is the pressure of the gas?
e. Repeat the calculation for part d but now assume that the Ar gas obeys the van der Waals equation of state: [P + a(n/V)2](V - nb) = nRT with a = 1.35 atm L2 mol-2 and b = 0.0322 L mol-1.