Question

How many moles are in 98.17 g of osmium?​

Answer 1

Answer:

0.5161 mol Os

Explanation:

Step 1: Find molar mass

Os (Osmium) - 190.2 g/mol

Step 2: Use Dimensional Analysis

$98.17 \hspace{3} g \hspace{3} Os(\frac{1 \hspace{3} mol \hspace{3} Os}{190.2 \hspace{3} g \hspace{3} Os} )$ = 0.516141 mol Os

Step 3: Simplify

We have 4 sig figs

0.516141 mol Os ≈ 0.5161 mol Os