Jawapan

2015-06-17T12:09:39+08:00


bil mol= g/gmol

?=14.2g/35.5g/mol

=0.4mol

2015-06-18T16:34:04+08:00
Bilangan mol = jisim bahagi jisim atom relatif

14.2 bahagi dengan 35.5 =0.4 mol