A container with rigid walls is filled with 4 mol of air with CV = 2.5R. How much does the internal (thermal) energy change if the temperature of the air rises from 16°C to 437°C? The ideal gas constant is R = 8.314 J/mol ∙ K.
A) 35 kJ
B) 421 J
C) 3.5 kJ
D) 8.75 kJ

Question

Quizplus · Accepted Answer

The internal energy change is given by:ΔU = nCvΔT = 4 mol * 2.5R * (437°C - 16°C) = 35 kJ

A Container with Rigid Walls Is Filled with 4 Mol