How much energy is needed to melt 45 grams of lead(.045 kg) so it can be used to make a lead sinker for fishing? The lead has an initial
temperature of 30 degrees celsius and is poured into a mold immediately after it melts.
C lead=128 J/kg C
Heat of fusion = 24,500 J/kg
Melting point of lead = 327.3 degrees celsius
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