Question

The enthalpy of fusion of ice is 330,000 J/kg. If I have a 10 kg sample, how much energy is needed to melt all of it?

A. 33,000 J
B. 3,300 J
C. 3,300,000 J
D. 330,000 J

Answer 1

The correct answer is C. 3,300,000 J.

Step-by-step explanation:

The enthalpy of fusion of ice is the amount of energy required to melt one kilogram of ice at its melting point without changing its temperature. Given that the enthalpy of fusion is 330,000 J/kg, and you have a 10 kg sample of ice, you can calculate the energy needed to melt all of it as follows:

Energy = Enthalpy of fusion × Mass

Energy = 330,000 J/kg × 10 kg = 3,300,000 J

So, the correct answer is C. 3,300,000 J.