Jawabanmu

Jawaban paling cerdas!
2014-05-18T23:15:44+07:00
Massa Oksigen = 40% = 40 gram (dianggap)
massa unsur X = 60% = 60 gram (dianggap)

mol O = 40 gram : 16 gram/mol = 2.5 mol
mol X = 1/2 × mol O = 1.25 mol

Ar = massa / mol
= 60/1.25
=48 gr/mol
11 4 11
makasih ya tapi gak ada jawabannya hehe
eh ada deh salah liat wkwk makasih lagi yaa