Final answer:
The molecular formula of compound A with an empirical formula of C2H3O2 is C6H6O6.
Step-by-step explanation:
The empirical formula of compound A is C2H3O2.
To determine the molecular formula, we need to know the molar mass of the compound. If the molar mass is given, we divide it by the empirical formula mass (which is the sum of the atomic masses of the elements in the empirical formula). In this case, the molecular formula mass is 3 times the empirical formula mass (because the empirical formula has 3 carbon atoms, 3 hydrogen atoms, and 2 oxygen atoms). Therefore, the molecular formula of compound A is 3 times the empirical formula: C6H6O6.