Suppose the pressure of 20 g of an ideal monatomic gas is tripled while its volume is halved. What happens to the internal energy of the gas?
A) It stays the same, as the described changes do not involve internal energy.
B) It increases.
C) It decreases 33%.
D) This depends on the molecular weight of the gas involved, thus this is indeterminate.

Question

Quizplus · Accepted Answer

The internal energy of an ideal monatomic gas is directly proportional to its temperature. Tripling the pressure while halving the volume results in an increase in temperature, thus increasing the internal energy.

Suppose the Pressure of 20 G of an Ideal Monatomic