The amount of heat needed is 338 J
Explanation:
When a substance is at its melting point, the amount of heat required in order to completely melt the substance is given by the equation:
where:
m is the mass of the substance
is the specific latent heat of fusion of the substance
In this problem, we have:
m = 5.24 g is the mass of gold
is the specific latent heat of gold
The sample of gold is already at its melting point, , therefore the amount of heat needed to melt it is:
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