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Question

Calculate the percentage of phosphorus in the fertilizer, superphosphate Ca(H2PO4)2.(Correct to 1 decimal point). [H = 1, O = 16, P = 31, C = 40]


A

32.5 %

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B

21.0 %

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C

35.0 %

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D

26.5 %

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E

31.5 %

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