[填空题]
Lipoic acid is an antioxidant t .qus2bq/ tqi7.nz5a jhat can be taken a438r5 vql/u b +izw xigd,s;bds a supplement for the body.
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.
