In this question, we have to find the amount of energy required to melt ice at 0°C, and in order to do that, we will be using the Calorimetry formula but modified for melting of ice, the formula will be:
Q = m*ΔHfusion
m is 12.80 grams
ΔHfusion is 334 J/g
Now we add these values into the formula:
Q = 12.80 * 334
Q = 4275 Joules are required
