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1. In sulphur estimation 0.157g of an organic compound gave 0.4813 g of BaSo4. What is the percentage of sulphur in the organic compund?



Weight of sulphur is 32 u
and weight of BaSO4 is 233 u

so weight of sulphur in BaSO4= (32/233) X 0.4813
Percentage of sulphur=(32/233) X(0.4813/0.57) X100= 11.46%
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