A piece of sodium whium with unknown weight was put into wateer and the weight of hydrorogen gas produced was produced was 0.51g . Find the weght of the piece.
(Hint.write the equation first.)
chem~數
2012-12-06 6:33 am
回答 (1)
2012-12-06 7:40 am
✔ 最佳答案
2Na + 2H2O → 2NaOH + H2No. of moles of H2 = 0.51/(1x2) = 0.255 mol
No. of moles of Na = 0.255 x 2 = 0.51 mol
Weight of the piece of Na = 23 x 0.51 = 11.73 g
參考: micatkie
收錄日期: 2021-04-13 19:09:50
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