唔該死我想問你們一條問題(係SCIENCE)

2007-11-14 5:40 am
i want to ask u a question which is about sodium

Appearance :
Electrical conductivity:
Heat conductivity:
And three applications of the sodium
please answer it before tomorrow !!!But use simp,e english thankyou!!

回答 (3)

2007-11-14 6:07 am
✔ 最佳答案
Appearance: silvery as well as soft metal

Electrical conductivity: 21000000 Ω/m

Heat conductivity: 141 W m^-1 K^-1

3 applications:
Synthesize mercury alloys
The refrigerant of atomic reactor
Sodium-vapor lamp
參考: me + my book
2007-11-14 5:47 am
It is too hard for me !!!
I don't know !!!
2007-11-14 5:44 am
??????I don't konw what do you ask?????????


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