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WAEC Chemistry 2019 Paper
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© africaexams.com
Question : 28
Total: 50
An organic compound contains 72% carbon, 12% hydrogen and 16% oxygen by mass. What is the empirical formula of the compound?
C
3
H
8
O
C
6
H
12
O
C
6
H
12
O
2
C
12
H
12
O
11
Validate
Solution:
C = 72 / 12 H = 12 / 1 O = 16 / 16
C = 6 H = 12 O = 1
: EMPIRICAL FORMULA
C
6
H
12
O
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