Question
Calculate the molecular mass of the following:
$\mathrm{CO}_2$

Answer

$\mathrm{CO}_2$
The molecular mass of carbon dioxide, $\mathrm{CO}_2$
$=(1 \times \text { Atomic mass of carbon })+(2 \times \text { Atomic mass of oxygen })$
$=[1(12.011 \mathrm{u})+2(16.00 \mathrm{u})]$
$=12.011 \mathrm{u}+32.00 \mathrm{u}$
$=44.01 \mathrm{u} .$

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