The amount of heat a 30-gram sample of substance Y absorbs to melt at its melting point is <u> 105 J.</u>
The enthalpy of fusion of a substance additionally referred to as heat of fusion is the alternate in its enthalpy resulting from imparting electricity, usually heat, to a specific amount of the substance to change its state from a stable to a liquid, at a steady strain.
The heat of fusion is the amount of heat vital to alternate 1 g of a stable to a liquid without a temperature exchange.
The heat of fusion is the strength wished for one gram of a solid to melt without any change in temperature. The heat of vaporization is the energy needed for one gram of a liquid to vaporize (boil) without a trade-in strain.
q = m·ΔHf
= 30 × 3.5
heat <u>= 105 J</u>
<u> </u>
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