Is this correct>
What is the amount of heat energy released when a 5.0g sample of copper cools from 75 degrees celcius to 25 degrees celcius? Ccu = 0.385 KJ/KgC
(0.005kg) (0.385 KJ/KG C) (-50degrees)
Would the answer be negative? Would the degrees be multiplied as a negative since its cooling?
the heat energy released is,
Q =me (T,-T) CL
substitute the given ...
´10 kg (0.385 KJ/kgC) (25°c-75°C) 1g Q= (5.0g) = -0.096 KJ
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