# How many mol of CO_2 are in 12.6 g of CO_2?

Apr 20, 2016

$m o l s = 0.2863 \approx 0.29$

#### Explanation:

use the formula $m o l s = \frac{m a s s}{m r}$ mr is the relative atomic mass.
so mols are unknown
mr of CO2: $12 + 16 \left(2\right)$
$44$
mass is $12.6 g$
now put them in the formula given
$m o l s = \frac{12.6}{44}$
$m o l s = 0.2863 \approx 0.29$