Problem: A 7.74 g sample of HCN is found to contain 0.287 g of H and 4.01 g of N.Find the mass of carbon in a sample of HCN with a mass of 3.43 g.

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Step 1. Mass of C in the first sample

mHCN=mH+mC+mNmC=mHCN-mH-mN=7.74 g-0.287 g-4.01 g

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Problem Details

A 7.74 g sample of HCN is found to contain 0.287 g of H and 4.01 g of N.

Find the mass of carbon in a sample of HCN with a mass of 3.43 g.

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