# Question: a container holds 45 mol of an ideal monatomic gas...

###### Question details

A container holds 4.5 mol of an ideal monatomic gas with a
pressure of 125 kPa. The container initially has a volume of 0.10
m3. The gas undergoes an adiabatic expansion until it reaches a
volume of 0.3 m^{3} and a pressure of 20.0 kPa.

What is the thermal energy of the gas after the expansion?

How much energy went into or out of the gas as work during the expansion? (Positive for energy into the gas, negative for energy out of the gas.)

How much energy went into or out of the gas as heat during the expansion? (Positive for energy into the gas, negative for energy out of the gas.)

What is the change in thermal energy of the gas?