Hi, I got a problem in thermodynamics. Q. In an isothermal expansion of a gas the energy absorbed by the gas is completely converted to work. Explain how this process can still be consistent with the Kelvin-Planck statement of the second law of thermodynamics. I thought that's because the question is describing only a part of a cycle and not the full cycle. But i cannot explain further in words.... how can i answer this question in full-mark style?