QUESTION 1
An ideal monatomic gas is confined in a container with a moveable piston. 30,000 J of thermal energy are added to the
gas. The gas does 10,000 J of work while expanding. The change in internal energy of the gas is
? 10,000 J
? 20,000 J
? 30,000 J
? 40,000 J
? Cannot know unless we know how many moles of gas are in the container
QUESTION 2
An ideal monatomic gas is confined in a container with a moveable piston. 10,000 J of thermal energy are removed from
the gas. Then 20,000 J of work is done on the gas by compressing it. The change in internal energy of the gas is
? -30,000 J
? 10,000 J
? 20,000 J
? 30,000 J
? Cannot know unless we know how many moles of gas are in the container