The melting point of copper is 1,080^(@)C and its heat of fusion is 200kJ/kg. if a copper coin at this temperature is completely melted by the absorption of 2,000 J of heat, what is the mass of the coin?

The melting point of copper is 1,080^(@)C and its heat of fusion is 20

1.	The melting point of copper is 1,080^(@)C and its heat of fusion is 200kJ/kg. if a copper coin at this temperature is completely melted by the absorption of 2,000 J of heat, what is the mass of the coin?
Answer» `(1)/(1,080kg)` `(1)/(540kg)` `(1)/(108kg)` `(1)/(100kg)` Solution :phase changes obey the EQUATION Q=mL, where m is the mass of the sample and L is the latent heat of transformation. Ini this case, we FIND that `m=(Q)/(L)=(2000J)/(200kJ//kg)=(2000J)/(200xx10^(3)J//kg)=(1)/(100)kg`.

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The melting point of copper is 1,080^(@)C and its heat of fusion is 200kJ/kg. if a copper coin at this temperature is completely melted by the absorption of 2,000 J of heat, what is the mass of the coin?

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