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20 J of heat is supplied to a system and change in internal energy of the system is 10 J. If 2 J of heat is taken out then how much was work done on the system?(a) -2 J(b) -4 J(c) -6 J(d) -8 JI had been asked this question in quiz.My enquiry is from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation

Answer»

Right choice is (d) -8 J

The best I can explain: For the GIVEN PROCESS ∆U = W +Q.



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