A10.0g piece of copper wire, sitting in the sun reaches a temperature of 80.0 c. how many joules are released when the copper cools to 40.0 c? the specific heat capacity of copper is 0.377 j/(g. c)

150.8 J

Explanation:

The heat released by the copper wire is given by:

where:

m = 10.0 g is the mass of the wire

Cs = 0.377 j/(g.C) is the specific heat capacity of copper

is the change in temperature of the wire

Substituting into the equation, we find

And the sign is negative because the heat is released by the wire.

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