How to calculate percent SO4 in a sample of copper under certain circumstances...?

Ashley

New member
How would I calculate the percent of SO4 (sulfate?) in a 2.1252g sample of Cu(NH3)4SO4 H2O (copper ammonia sulfate monohydrate?) if 1.9839g of BaSO4 (barium sulfate) is precipitated upon addition of BaCl2*2H2O (Barium chloride dihydrate)?
 
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