To change 50 g of boiling water to steam requires
A)50 calories.
B)500 calories
C)540 calories.
D)more calories than is required to bring 50 g of ice at absolute zero to the boiling point.
E)none of the above

Question

Quizplus · Accepted Answer

The latent heat of vaporization for water is 540 calories per gram, so converting 50 g of boiling water to steam requires 50 x 540 = 27,000 calories. This is more than the energy required to bring 50 g of ice from absolute zero to the boiling point.

To Change 50 G of Boiling Water to Steam Requires