Respuesta :
Answer: The object's heat of fusion is 68.52 Joules/gram.
Explanation:
Mass of the sample = 42 grams
Energy required to melt the sample completely = 2878 Joules
[tex]Q=m\times\Delta H_{fusion}[/tex]
[tex]2878 Joules=42\times \Delta H_{fusion}[/tex]
[tex]\Delta H_{fusion}=\frac{2878 Joules}{42 g}=68.52 Joules/gram[/tex]
The object's heat of fusion is 68.52 Joules/gram.
