Question

A certain amount of ideal monatomic gas is maintained at constant volume as it is cooled from 455K to 405 K. This feat is accomplished by removing 400 J of heat from the gas. How much work is done by the gas during this process? The ideal gas constant is R = 8.314 J/mol • K.

Answer 1

Answer:

$W=0$

Explanation:

The work done by the gas is defined as:

$W=P\Delta V$

Where P is the presion and $\Delta V$ is the volume change. Since the gas is maintained at constant volume, we have $\Delta V=0$. So:

$W=P(0)\\W=0$

So, the heat is equal to the change in the internal energy of the gas.