Answer:
0.5161 mol Os
Explanation:
Step 1: Find molar mass
Os (Osmium) - 190.2 g/mol
Step 2: Use Dimensional Analysis
[tex]98.17 \hspace{3} g \hspace{3} Os(\frac{1 \hspace{3} mol \hspace{3} Os}{190.2 \hspace{3} g \hspace{3} Os} )[/tex] = 0.516141 mol Os
Step 3: Simplify
We have 4 sig figs
0.516141 mol Os ≈ 0.5161 mol Os
