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how many pounds of copper can you melt with 3120 BTUs of heat assuming it is...

how many pounds of copper can you melt with 3120 BTUs of heat assuming it is at melting point.

answer provided 559.6 lbs

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Answer #1

As the temperature is already at its melting point, we do not require to increase its temperature. All of the energy will be used to convert the solid into liquid form. Here, 3120 Btu will be used as latent heat of fusion.

Energy supplied = mass * Latent heat of fusion
Q = m*L
Latent heat of fusion for copper is around 13 kJ/kg, which is roughly around 5.58 Btu/lb

3120 Btu = m * (5.58 Btu/lb)
mass of copper = 559.139 lbs
The variation in the answer is dependant on what value of L you consider for the calculation.

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