2kg冰(0度)加去2kg水蒸汽(100度),最後溫度係幾多
原本條問題~~>
what is the final temperature when 2kg of ice at 0 ℃ is mixed with 2kg of steam at 100 ℃?
我答:
Let T be the final temperature
ml+mc(T)= ml+mc(T)
2x2.26x10^6+2x4200(100-T)=2x3.34x10^5+2x4200x(T-0)
但係計到T=279度
我錯係邊??
(T)=溫差(唔識打出黎)