Jawabanmu

2014-03-27T23:40:03+07:00
Fe2s. massa besi: 7x2 / 18 x 36 gram = 28 gram massa belerang: 4/18x36gram = 8 gram :)
2014-03-28T00:26:06+07:00
tembaga sulfida (fe2s)
massa besi: 7x2 / 18 x 36 gram = 28 gram
massa belerang: 4/18x36gram = 8 gr