0.3785 g of a sample containing calcium was analyzed by dissolving it in 250 mL and titrating a 25 mL aliquot. This consumed 18.75 mL of 0.0184 M EDTA solution. Express the calcium content in: a) ppm CaO  b) ppm CaCO3  c) ppm CaC12 d) ppm Ca3(P04)2

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A: Solution -

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