Answer:
0.0048 mol Cr
Explanation:
Step 1: Define
Molar Mass of Chromium (Cr) - 52.00 g/mol
Step 2: Use Dimensional Analysis
[tex]0.25 \hspace{3} g \hspace{3} Cr(\frac{1 \hspace{3} mol \hspace{3} Cr}{52.00 \hspace{3} g \hspace{3} Cr} )[/tex] = 0.004808 mol Cr
Step 3: Simplify
We are give 2 sig figs.
0.004808 mol Cr ≈ 0.0048 mol Cr
