Answers

2016-05-08T01:33:56+05:30
Ammonium Sulphate: (NH4)2SO4
 
As per their charges,     NH4 +           SO4  -2
Exchanging their ions,                X
                                          
(NH4)2SO4
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2016-05-08T01:52:22+05:30
Formula of ammonium sulphate = (NH4)2SO4

Ammonium has a +1 charge, Sulfate (SO4) has a -2 charge
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