In a Steam Engine,steam in a Cylinder Is Compressed by a Piston

question 158

Multiple Choice

In a steam engine,steam in a cylinder is compressed by a piston exerting 13.5 atm of external pressure.The volume of the cylinder decreases by 20.1 L and simultaneously the steam heats up.If the total energy change of the steam is 32.8 kJ,calculate the heat flow into/out of the steam.(101.3 J = 1 L . atm)

• A)+239 J
• B)+27.5 kJ
• C)-27.5 kJ
• D)+5310 J
• E)-5310 J

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