Problem: Consider the following four formulas: SO2, B2H6, CO, C4H2O2.Which of these formulas could be only an empirical formula, only a molecular formula, either a molecular or an empirical formula?

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Consider the following four formulas: SO2, B2H6, CO, C4H2O2.

Which of these formulas could be only an empirical formula, only a molecular formula, either a molecular or an empirical formula?