How many moles of cobalt are in 27.4 grams of cobalt?

Given:
\begin{tabular}{l|l}
27.4 g Co & [tex]$\frac{1 \text{ mol Co}}{58.93 \text{ g Co}}$[/tex] \\
\end{tabular}

Calculate:
[tex]\[
\text{Number of moles} = \frac{27.4 \text{ g Co}}{58.93 \text{ g Co/mol}} = [?] \text{ mol Co}
\][/tex]



Answer :

To find out how many moles of cobalt are in 27.4 grams of cobalt, follow these steps:

1. Identify the given data:
- Mass of cobalt: 27.4 grams
- Molar mass of cobalt: 58.93 grams per mole

2. Use the formula to convert grams to moles:

[tex]\[ \text{Number of moles} = \frac{\text{Mass (in grams)}}{\text{Molar mass (in grams per mole)}} \][/tex]

3. Plug in the given values:

[tex]\[ \text{Number of moles} = \frac{27.4 \text{ grams}}{58.93 \text{ grams per mole}} \][/tex]

4. Perform the division to find the number of moles:

[tex]\[ \text{Number of moles} \approx 0.465 \text{ moles} \][/tex]

Therefore, there are approximately 0.465 moles of cobalt in 27.4 grams of cobalt.