Jawabanmu

2014-06-14T04:55:11+07:00
Rumus hidrokarbon : CxHy
C= 84% = 84/ar =84/12= 7
H=16% = 16/ar= 16/1 =16
jadi perbandingannya 7:16
rumus empirisny (C7H16)n
Mr empiris = Mr molekul
Mr(C7H16)n=100
7.12n+16.1n=100
100n=100
n=1
jadi rumus molekulnya = (C7H16)1= C7H16

semoga membantu