In a Steam Engine, Steam in a Cylinder Expands Against

question 57

Multiple Choice

In a steam engine, steam in a cylinder expands against a piston, exerting 10 atm of external pressure. The volume of the cylinder increases by 10 L and simultaneously the steam cools, losing 3,000 kJ of energy to the surroundings. What is the change in energy of the steam?
(101.3 J = 1 L atm)

• A) -3,010 kJ
• B) -3,001 kJ
• C) -3,100 kJ
• D) -13,135 kJ
• E) -2,990 kJ

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