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If a gas in a piston under goes expansion from 3.2 L to 4.1 L against an external pressure of 1.2 atm and absorbs 1.11 kJ of
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Work = WE - P(V2-V,) w=-1.2 ( 4.1-3.2) w=1.08 atm.L W=-1.08 x 101.3J W = -109.404 J heat =q=1.11 kJ V = 1110 J AU = fosternal

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