Q. When a gas expands adiabatically,

2520 276 Thermodynamics Report Error

A

no energy is required for expansion

52%

B

energy is required and it comes from the wall of the container of the gas

13%

C

internal energy of the gas is used in doing work

26%

D

law of conservation of energy does not hold

9%

Solution:

$Δ Q = 0 = Δ U + Δ W$
$Δ W = - Δ U$