A closed container contains a homogeneous mixture of two moles of an ideal monatomic gas (γ=5/3) and one mole of an ideal diatomic gas (γ=7/5). The mixture does 66 J of work when heated at constant pressure. Find the change in internal energy, in joules.

Physics · Thermodynamics

JEE Advanced 2023

A closed container contains a homogeneous mixture of two moles of an ideal monatomic gas (γ=5/3) and one mole of an ideal diatomic gas (γ=7/5). The mixture does 66 J of work when heated at constant pressure. Find the change in internal energy, in joules.