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1.3 Molecular Formulas and Percent Composition

Lesson Summary

Empirical vs. Molecular Formulas

What is the empirical formula for glucose, C6H12O6?

Percent Composition

What is the percentage of carbon in C6H12O6?

What is the percent composition of nitrogen in morphine, whose molecular formula is C17H19NO3?

What is the empirical formula of a compound that is 17.3% H and 82.7% C?

If your compound’s actual molecular weight is 58.123 amu, then what is its molecular formula?