Question

1.00 g of 20Ne (molar mass 20.2 g/mol) in the gas phase is contained inside a sealed cylinder with a piston that is free to slide up and down. Initially, the gas is at atmospheric pressure and occupies a volume of 1500 cm3 (state 1). The temperature of the gas then increases to 500 K (state 2). Next, a rod is inserted which holds the piston fixed in place, and the gas cools to a temperature of 300 K (state 3).

a) Draw a pV diagram showing the two processes described above and the three states (1), (2), and (3).

b) What are the pressure, volume and temperature at each point (1), (2) and (3)?

state	P(atm)	V(L)	T(K)
1
2
3

Answer 1