1.我想問點將s.h.c.(4200J kg-1℃-1)的water express in J g-1℃-1?
2.如果60kJ 的 energy transferred 去4kg alcohol(2500Jkg-1℃-1),
original temp系20℃，final temp 系咩?
可以就解釋多d,thanks!
specific heat capacity
2008-10-23 6:34 am
回答 (1)
2008-10-23 6:41 am
✔ 最佳答案
1. 你先面明白-1既意思係咩-1既意思姐係將果樣野俾1除 所以kg^-1= 1/kg c^-1=1/c
therefor especific heat capacity of water is 4200j/kg*c
要將g轉左kg要x1000 g x1000=kg
therefore 4200j/g*1000*c
=4.2 jg^-1c^-1
2. E=mc*(change inTemperature)
60x1000=4*2500*(f-20)
6=f-20
f=26
therefore final temp is 26c
參考: 自己
收錄日期: 2021-04-13 17:52:02
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081022000051KK02161