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Models of Matter A.4 The Mole (id: 1ae2f3fe5)

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admin 发表于 2024-2-6 07:28:10 | 显示全部楼层 |阅读模式
本题目来源于试卷: Models of Matter A.4 The Mole,类别为 IB化学

[填空题]
Lipoic acid is an antioxidant that can5ia7vo 6vz/w65onvbd be taken as a supplement for the bod(/ mgs* xc anlr7f6,qyy.
1.Determine the empirical formula of lipoic acid.

Element
Percentage Composition by mass
C 46.56%
H 6.85%
O 15.5%
S 31.08%

C=  g, H=  g, O=  g, S=  g
2.Calculate the molar mass of the empirical formula of lipoic acid.  g $mol^{-1}$
3.If the actual molar mass of lipoic acid is 206.44g $mol^{-1}$, determine its molecular formula. 




参考答案:
空格1: 46.56空格2: 6.85空格3: 15.5空格4: 31.08空格5: 103.18空格6: 2


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