дано
W(C) = 81.82%
------------------
CnH2n+2-?
W(C) = Cn / CnH2n+2 * 100%
81.82 = 12n / 14n+2 *100%
n = 3
C3H8
сумма = 3+8 = 11
ответ 11
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дано
W(C) = 81.82%
------------------
CnH2n+2-?
W(C) = Cn / CnH2n+2 * 100%
81.82 = 12n / 14n+2 *100%
n = 3
C3H8
сумма = 3+8 = 11
ответ 11