Please calculate the folowing question step by step. =)
Q: Calculate the amount of 100 deg.C steam needed to change 1 kg of water at 0 deg.C to water at 100 deg.C
physics
2007-06-02 10:49 pm
回答 (1)
2007-06-03 3:53 am
✔ 最佳答案
We use the following figures:Specific latent heat of vaporization of water = 2.26 × 106 J/kg
Specific heat capacity of water = 4200 J/kg K
So suppose that m kg of steam at 100°C is needed and there's no heat exchange with the surroundings.
Then by Heat loss of steam = Heat gain of water, we have:
m × 2.26 × 106 = 1 × 4200 × 100
m = 0.186
So 186 grams of steam is needed.
參考: My physics knowledge
收錄日期: 2021-04-13 00:33:38
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