Empirical and Molecular Formulas

The empirical formula mass of is . 1 H @ 1.0 = 1.0 1 C @ 12.0 = 12.0 2 O @ 16.0 = 32.0 45.0 Note that 45 is exactly half of the molecular mass of 90. So the formula mass of HCO2 is exactly half of the molecular mass. Hence the molecular formula is double that of the empirical formula or H2C2O4. ................
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