Answer to Question #243331 in General Chemistry for lele

Question #243331

A cup of coffee (100 g) cools from 90˚C down to comfortable room temperature 25.˚C. How much energy does it release to the surroundings?

Expert's answer

The energy release during cooling is

"Q=cm(t_f-t_i)=4200\u00b70.1(25-90)=27300\\text{ J}."

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