# What is the molecular formula of a compound if its empirical formula is #NO_2# and its molar mass is 138.02 g/mole?

##### 1 Answer

Apr 25, 2016

#### Answer:

138.02 g/mol

then

Molecular Formulae = Empirical Formulae

#### Explanation:

If the molar mass of 138.02 g/mol has been provided for you,

divide it by the molar mass of

Nitrogen has a molar mass of 14.0 g/mol, whereas oxygen is 16.0 g/mol

138.02 g/mol

138.02 g/mol

Since 3.00 is the whole number, multiply it by the empirical formula.

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