Question

For the adiabetic expansion of an ideal gas a) does the gas do work? B) doesd the internal energy of the gas increase, decrease or remain constant? C) what happens to the temperature?

Please check my answers

A) yes the gas does work because it is expanding

B) internal energy is zero because q=0

C) the temperature remains constant because q=0

Answer 1

A is right.
C is right.
I don't agree with B.
If dE = q + w and q is zero as you answered in C and work is done as you answered in A, how can dE be zero as you answered in B.