Question

How many calories are needed to convert 1 gm of water into vapor?
(a) 79 Calories
(b) 165 Calories
(c) 405 Calories
(d) 607 Calories

Answer 1

Answer:

If 1 g of water (at 0 degrees Celsius) gives away 80 calories, it will freeze and its final temperature will be 0. Boiling water at 100 degrees Celsius: 540 calories are needed to turn 1 gram (at 100 degrees Celsius) of water to steam.

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