# What NUMBER of carbon monoxide molecules constitutes a mass of 28*g?

Jul 16, 2017

How many moles of $C O$ do you have.........?

#### Explanation:

And we know that by definition, $1 \cdot m o l$ of stuff contains $6.022 \times {10}^{23}$ individual items of that stuff, i.e. ${N}_{A}$ individual items, where ${N}_{A} \equiv 6.022 \times {10}^{23} \cdot m o {l}^{-} 1$.

.......And here your stuff is $C O$, where a mole of said stuff has a mass of $28 \cdot g$....

How many atoms in this molar quantity?

Note that this question is effectively asking $\text{how many atoms are there in dozen carbon monoxide molecules?}$

I make it $\text{3 dozen..}$

If you can answer this question, you can certainly answer the former.