Chemistry waec 1990

What is the molecular formula of a compound whose empirical formula is CH2O and molar mass is 180? (H = 1, C = 12, O = 16)

a

C 4H 8O2

b

C 4H 8O3

c

C 6H 10O5

d

C 6H 12O6

e

C 12H 22O11

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Hormotoyosee
6 years ago

CH2O
12 + (1×2) + 6
12 + 2 + 16 = 30

180 ÷ 30 = 6

C6×1 H6×2 O6×1

Ans= C6H12O6

kinzyky
5 years ago

(12+1×2+16)n@=180
30n=180
n=180÷30
n=6
(CH2O)6=C6H12O6

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