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1st Law of Thermodynamics

200 g of copp...

Question

$200 g$ of copper at $200^{o} C$ is cooled to $20^{o} C$ . If the specific heat capacity of copper is $0.4 J / g^{o} C$ , calculate the heat energy given out( $i n J$ )

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Solution

Heat given out, $H = m \times$ $C_{p} \times Δ T$
Putting $m = 200 g$ ,
$C_{p} = 0.4$ ,
$Δ T = 200 - 20 = 180^{o} C$
We get $H = 14400 J$

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