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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