Answer:
0.88 mol O₂
Explanation:
Step 1: Find molar mass
Oxygen (O) - 16.00 g/mol
O₂ - 32.00 g/mol
Step 2: Use Dimensional Analysis
[tex]28 \hspace{3} g \hspace{3} O_2(\frac{1 \hspace{3} mol \hspace{3} O_2}{32.00 \hspace{3} g \hspace{3} O_2} )[/tex] = 0.875 mol O₂
Step 3: Simplify
We have 2 sig figs.
0.875 mol O₂ ≈ 0.88 mol O₂
