Please show clear steps and explaination.
Thank you!!
更新1:
1kg of 0 degree Celsius to 100 degree Celsius
F.3 physics (heat) 15points
2009-11-30 7:19 am
How much 100 C steam is needed to rise 0 C water into 100 C water ??
Please show clear steps and explaination.
Thank you!!
Please show clear steps and explaination.
Thank you!!
回答 (2)
2009-12-02 5:13 am
✔ 最佳答案
Let m be the amount of steamAssume there is no energy lost to the surroundings
By the conversation of energy,
m(2.26*10^6) = (1)(4200)(100 - 0)
m = 0.186 kg (cor. to 3 sig. fig)
2009-11-30 5:14 pm
Let m be the mass of steam required
Heat given out by steam = mL
where L is the latent heat of evapourization of steam
Heat absorbed by water = 1 x 4200 x 100 J
Using the heat balance equation
mL = 420000
hence, m = 420000/L kg
Heat given out by steam = mL
where L is the latent heat of evapourization of steam
Heat absorbed by water = 1 x 4200 x 100 J
Using the heat balance equation
mL = 420000
hence, m = 420000/L kg
收錄日期: 2021-04-29 17:30:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091129000051KK02068