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A 8.13 g sample of HCN is found to contain 0.301 g of H and 4.22 g of N.

Find the mass of carbon in a sample of HCN with a mass of 3.39 g.

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g carbon = 8.13-0.301-4.22 = ??g
% C = (??g/8.13)*100

3.39 x (%C/100) = xx

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