. A compound is composed of 74% C, 8.7 % H, and 17.3% N Determine the empirical formula of the
compound. If the molecular mass of the compound is 162, what is its molecular formula?
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Given % of C = 74% of H = 8.7% of N = 17.3
∴Empirical formula of compound = C5H7N
Molecular mass of compound = 162Empirical formula
mass of compound = 12 x 5 + 1 x 7+14= 60 + 7 + 14=81
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