Answers

2014-01-08T23:19:20+05:30
Im in primary i dont know if ill be able to reach an answer but  i will give it a try
ratio of alluminium to sulphur = 2:3
if x is amt of alluminium we need
40g *2  =  3* x
(40*2)/3=x
26.6 = x

now formulae is al2s3
hence its mass would be 27*2+32*3
which is 150

plz correct me if im wrong  hope its wright fingers crossed
0
2014-01-13T18:07:52+05:30
Ratio of aluminium to sulpher=2:3
if x is amt of aluminium we need 40g*2=3*x
[40*2]/3=x.


now formula  is al2s3
hence its mass would be 27*2+32*3
which is 150.
0