Final answer:
To find the heat of fusion for the substance, divide the total energy required to melt the substance (741 joules) by the mass of the substance (30.0 grams). The heat of fusion for this substance is 24.7 J/g.
Step-by-step explanation:
To calculate the heat of fusion for a substance, we need to know the amount of thermal energy (in joules) required to melt a known mass of the substance without a change in temperature. The heat of fusion is expressed in joules per gram (J/g) and can be determined using the formula:
Heat of Fusion (J/g) = Total Energy Required to Melt (J) ÷ Mass of the Substance (g)
From the given question, we have:
- Total Energy Required to Melt = 741 joules
- Mass of the Substance = 30.0 grams
Applying the formula:
Heat of Fusion = 741 J ÷ 30.0 g = 24.7 J/g
Thus, the heat of fusion for the substance in question is 24.7 J/g.