Question

Determine the number of oxygen molecules in 50.88 g of oxygen if the molar mass of

Answer 1

Answer:

$\large \boxed{9.575 \times 10^{23}\text{ molecules}}$

Explanation:

1. Moles of oxygen

$\text{Moles of O}_{2} = \text{50.88 g O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{32.00 g O}_{2}} = \text{1.590 mol O}_{2}$

2. Molecules of oxygen

$\text{Molecules of O}_{2} = \text{1.590 mol O}_{2} \times \dfrac{6.022 \times 10^{23}\text{ molecules O}_{2}}{\text{1 mol O}_{2}} = \mathbf{9.575 \times 10^{23}}\textbf{ molecules O}_{2}\\\\\text{There are \large \boxed{\mathbf{9.575 \times 10^{23}}\textbf{ molecules of O}_{2}} in 50.88 g of oxygen.}$