latent heat

2007-05-08 5:52 am
the no of calories given up by 1.0 gram of steam at 100 degree celsius when it changes to water at 100 degree celsius

回答 (1)

2007-05-08 7:02 am
✔ 最佳答案
By the data of specific latent heat of vapourization of water is:
2.272 × 106 J/kg
We have the heat given out, in joule, is:
0.001 × 2.272 × 106 = 2272 J
Therefore, in calories, the heat amount is:
2260 / 4.184 = 543 cal
參考: My physics knowledge


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