Jawabanmu

2014-05-26T04:46:30+07:00
Kadar C = (n . Ar C)/Mr x 100%
84% = (n . 12)/100 x 100%
84% = 12n
n = 7

kadar H = (m . Ar H)/Mr x 100&
16% = (m . 1)/100 x 100%
16 = m

jadi, rumus molekulnya adalah C7H16