Chemistry Practice Problems Empirical Formula Practice Problems Solution: Some of the formulas below could be either molecul...

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# Solution: Some of the formulas below could be either molecular or empirical formulas: however, some could only be molecular formulas. Which of the following formulas must be molecular formulas? Select all that apply (a) C8H10N4O2 (b) C2H4O2(c) C3H4O3(d) C5H9(e) HO

###### Problem

Some of the formulas below could be either molecular or empirical formulas: however, some could only be molecular formulas. Which of the following formulas must be molecular formulas? Select all that apply

(a) C8H10N4O2

(b) C2H4O2

(c) C3H4O3

(d) C5H9

(e) HO

###### Solution

Recall that the empirical formula is the simplest whole number ratio formula of a compound. On the other hand, the molecular formula is the unsimplified and actual formula of a compound.

To identify a molecular formula, we need to check if the formula of a compound can be simplified further. This means we need to check if we can divide the formula by a whole number.

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