# Problem: 1 L.atm =101.325 J When 2.00 kJ of energy is transferred as heat to nitrogen in a cylinder fitted with a piston at an external pressure of 2.00 atm, the nitrogen gas expands from 2.00 to 5.00 L against this constant pressure. What is ∆U for the process? 1. 0 2. −0.608 kJ 3. +1.39 kJ  4. +2.61 kJ 5. −2.61 kJ

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1 L.atm =101.325 J

When 2.00 kJ of energy is transferred as heat to nitrogen in a cylinder fitted with a piston at an external pressure of 2.00 atm, the nitrogen gas expands from 2.00 to 5.00 L against this constant pressure. What is ∆U for the process?

1. 0

2. −0.608 kJ

3. +1.39 kJ

4. +2.61 kJ

5. −2.61 kJ

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