Calculate the number of moles in 48 g of oxygen atoms.

• weight of oxygen = 48 g
• We know that,

$Moles=\frac{weight}{molecularweight}$

$\left(\because molecularweightof{O}_2=32g/mol\right)$

Step 3:

$Moles=\frac{48}{32}$

$=1.5moles.$

Hence, the number of moles of oxygen atom = 1.5 moles