41. The general gas energy equation is (where Q1 – 2 = Heat supplied, dU = Change in internal energy, and W1 – 2 = Work done in heat units)
Q1 – 2 = dU + W1 – 2
Q1 – 2 = dU – W1 – 2
Q1 – 2 = dU/W1 – 2
Q1 – 2 = dU x W1 – 2
✅ The correct answer is option A.