What is the product enthalpy of 1 mole of the product? The feed of a process simulator is 1 mole with enthalpy 2 J/mole, the heat input is 4 J, and the work performed is 5 J.

• A. 1 J/mole
• B. 2 J/mole
• C. 3 J/mole
• D. 5 J/mole