Question

To turn 1 gram of boiling water to steam requires
A) almost as much energy as changing 1 gram of 0oC water to the boiling point.
B) as much as increasing 1 kilogram of 95oC water to the boiling point.
C) more energy than needed to turn 1 gram of absolute-zero ice to the boiling point.
D) none of the above

Answer

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