75 J of thermal energy is transferred to an ideal monatomic gas at a constant pressure of 1.0×105 Pa. The volume of the gas increases from 2.7×10−3m3 to 3.0×10−3m3.
What is the change in the internal energy of the gas?
(A) 45 J
(B) 105 J
(C) −45J
(D) −105J