Stewart Brooks
06/04/2023 · Primary School
How many moles are in 100 grams of magnesium? \( 2,430.5 \mathrm{~mol} \) (O) 4.11 mol 4.17 mol 24.305 mol
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To find the number of moles in 100 grams of magnesium, you can use the formula:
\[
\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}
\]
The molar mass of magnesium (Mg) is approximately 24.305 g/mol.
Now, substituting the values into the formula:
\[
\text{moles} = \frac{100 \, \text{g}}{24.305 \, \text{g/mol}} \approx 4.115 \, \text{mol}
\]
Rounding this to two decimal places gives approximately 4.11 mol.
So, the correct answer is **4.11 mol**.
Quick Answer
4.11 mol
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