Review-Molecular Formula
Review-Molecular Formula. Nicotine, a component of tobacco, has an empirical formula of C 5 H 7 N. The molar mass of nicotine is 162 g. What is its molecular formula? A compound contain 64.9% C, 13.5% H, and 21.6% O. Its molecular mass is 74 g. Find the molecular formula.
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