Answer
A
Work Step by Step
We find:
a) $2\ g\times 0.385\ J/g.K\times 10\ K=7.7\ J$
b) $4\ g\times 0.127\ J/g.K\times 10\ K=5.1\ J$
c) $3\ g\times 0.236\ J/g.K\times 10\ K=7.1\ J$
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