In gravimetric determination of sulphate present in the soil ,0.2045g of sample was treated with 0.2M of BaCl2 solution which forms a precipitate, then heated in the oven by keeping the precipitate in the crucible. If initial crucible weight was 3.0531g and final crucible weight is 3.5016g. What is the mass % of sulphate in the unknown sample? a) 19.00% b) 90.46% c) 41.15% d) 92.01%

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