How much heat is required to melt a quart of ice resting at 0 degrees Celsius?

Answer 1

You need about 290.3 kj of heat to melt one quart of ice at 0oC.

Water's latent heat of fusion is 333.7 kj/kg.

1 quart ≈ 0.946 lt. Density of ice is 0.920 kg/lt. So mass of ice (considering the quart of ice is one solid piece, not broken ice) is 0.946(0.920) kg ≈ 0.870 kg.

Heat required to melt the ice: 0.870 kg (333.7 kj/kg) ≈ 290.3 kj.

Answer 2

To melt ice at 0 degrees Celsius, you need to add 334 Joules of heat for every gram of ice. Since a quart of ice weighs about 907 grams, you would need approximately 303,038 Joules of heat to melt a quart of ice at 0 degrees Celsius.