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Grace [21]
3 years ago
9

Calculate the percentage by mass of oxygen in the following compounds ch3cooch3

Chemistry
1 answer:
Anestetic [448]3 years ago
3 0
CH3COOCH3

We have 2 atoms of oxygen - 2*M(O)=2*16.0=32.0 g/mol
Molar mass (CH3COOCH3)= 3*M(C)+2*M(O)+6*M(H)=3*12.0+2*16.0+6*1.0=
= 74.0 g/mol

% oxygen=(32.0 g/mol)/( 74.0 g/mol) *100% ≈ 43.2%
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