有substance A,B and C
Melting Point(degrees celsius) Boiling Point(degrees celsius)
A--> -30 100
B--> 300 600
C--> -150 -50
呢三樣分別系咩???
in english plzz =))
唔該曬!!救急呀 T3T
化學題--melting and boiling
2009-07-07 5:50 am
回答 (4)
2009-07-11 5:18 am
✔ 最佳答案
As supplementary, under different Pa values / atm. The states of A, B or C varies. So the question must state at room temperature or pressure, or there is no definite solution.Under room temperature/ 25 degree celsius
A is at liquid state
B is at solid state
C is at gas state
參考: KING chem
2009-07-09 4:39 am
唔該曬兩位解答左我嘅疑難=))
但系我想問,,點解你地兩個有同樣嘅見解呀><
系定論黎架??
可唔可以解釋下牙?
再次多謝兩位X))
但系我想問,,點解你地兩個有同樣嘅見解呀><
系定論黎架??
可唔可以解釋下牙?
再次多謝兩位X))
2009-07-09 4:22 am
No substance has these both melting point and boiling point. But this must be correct:
At room temperature, A is liquid, B is solid & C is gas.
At room temperature, A is liquid, B is solid & C is gas.
參考: me
2009-07-07 6:02 pm
At room temperature, A is liquid, B is solid & C is gas.
收錄日期: 2021-04-13 16:43:02
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