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shepuryov [24]
3 years ago
11

The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams o

f water? A. 1,040 cal B. 40 cal C. 270,000 cal D. 1.08 cal
Chemistry
2 answers:
forsale [732]3 years ago
7 0
The amount of heat needed to vaporize the given amount of water is the product of the amount in grams and the latent heat of vaporization in cal per gram. That is,
                              H = (540 calories / gram)( 500 grams) = 270,000 cal
Thus, the heat needed is 270, 000 calories. The answer is letter C. 
alexdok [17]3 years ago
6 0
1 g = 540 calories 
<span>500 g = ? calories </span>

<span>Since the mass is 500 times 1 g, so the number of calories </span>
<span>= 500*540 calories
=</span>270,000 <span>calories
Best Option is letter C.</span><span>270,000 cal.</span>
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