Question

C=40%
H=2,7%
O=53,3%
Mr=30
CxHyOz-?
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Answer 1

Ответ:

40/12 = 3.33/2.7 = 1.23 × 4 = 5

2.7/1 = 2.7/2.7 = 1 × 4 = 5

53.3/16 = 3.33/2.7 = 1.23 × 4 = 5