If a total of 780 joules of energy is lost by 25.0 grams of this substance, the heat of fusion is 31.2 J/g
The energy lost, H = 780 Joules
Mass of the substance, m = 25.0 grams
The Energy lost is the product of mass and the heat of fusion
The heat of fusion, c, is calculated using the equation below:
H = mc
Substitute H = 780 Joules and m = 25.0 grams into the equation
H = mc
780 = 25c
Divide both sides by 25
[tex]\frac{780}{25} = \frac{25c}{25} \\c = 31.2 Joules/g[/tex]
The heat of fusion of the substance is 31.2 J/g
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