# physics

calculate the amount of heat energy required to melt a 1kg iron ingot initially at 20 ¡ãC? (heat of fusion for Fe is 33.0 J/g

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1. You also need specific heat of iron and melting point
Watch your units, grams or kg , Joules or calories

to get up to Tmelt
heat = 1000 g * specific heat iron in Joules/gram deg C *(Tm-20)
to melt
heat = 1000g * 33 J/g

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