chem Q2

👨🏻‍🏫 學術台化學

[匿名]

2008-10-19 8:31 am

http://i270.photobucket.com/albums/jj88/ucc041087/1.jpg
plz help me to ans above Qs,thz!!!!!!
p.s. do not miss any steps!!!!!

更新1:

the website should be follow: http://i270.photobucket.com/albums/jj88/ucc041087/2.jpg

回答 (3)

Uncle Michael

2008-10-19 9:08 am

✔ 最佳答案

2ZnS(s) + 3O2(g) → 2ZnO(s) + 2SO2(g)

Mole ratio ZnS : O2 = 2 : 3

No. of moles of ZnS = 0.6 mol

No. of moles of O2 = 0.6 x (3/2) = 0.9 mol

Volume of O2 = mol x (molar volume) = 0.9 x 24 = 21.6 dm3
=

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冷眼旁觀

2008-10-19 6:19 pm

澳門朋友很明顯 copy and paste 第一個答案，最弊佢連答案都 copy and paste 後，仲叫人自己計答案，即刻露出馬腳。

最後仲作賊心虛，話個答案係自己做。

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[匿名]

2008-10-19 9:10 am

2ZnS(s) + 3O2(g) → 2ZnO(s) + 2SO2(g)

Mole ratio ZnS : O2 = 2 : 3

No. of moles of ZnS = 0.6 mol

No. of moles of O2 = 0.6 x (3/2) = 0.9 mol

Volume of O2 = mol x (molar volume) = 0.9 x 24 = 21.6 dm3
= ?(自己計)

GOOD LUCK!

參考: 自己

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