化學濃度計算問題:－線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

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化學濃度計算問題

Nov 11th 2013, 14:47

(1)
1000毫升的水=1000公克的水=1000c.c.的水(水的密度是1)
35%x1000=350(含有350c.c.的HCl)
350x1.2=420(將體積由D=M/V的公式轉換成質量)
所以第一題答案應該是420公克

(2)
先算出硫酸有幾莫耳，再算出水溶液有幾公升
因為莫耳體積百分率公式為莫耳數(mole)/水溶液(公升)

19.6/98=0.2
500/1000=0.5
0.2/0.5=40%
所以第二題答案應該是40%或2/5N 吧...

參考資料：懵懵懂懂的我

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