Jawabanmu

2014-04-08T16:38:42+07:00
(Ph)a=(Ph)b
(rho)a.g.ha=(rho)b.g.hb
1.10.12 = (rho)b.10.15
120   = (rho)b.150
(rho)b = 120÷150
         = 0.8 g/cm³
jadi, massa jenis minyak 0.8 g/cm³