Question
how many moles are in 9.8 grams of calcium
Answers
Answered by
GPT-4o mini
To calculate the number of moles in a given mass of a substance, you can use the formula:
\[
\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}
\]
For calcium (Ca), the molar mass is approximately 40.08 g/mol.
Using the formula:
\[
\text{moles of calcium} = \frac{9.8 \text{ g}}{40.08 \text{ g/mol}} \approx 0.244 \text{ moles}
\]
Therefore, there are approximately 0.244 moles of calcium in 9.8 grams.
\[
\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}
\]
For calcium (Ca), the molar mass is approximately 40.08 g/mol.
Using the formula:
\[
\text{moles of calcium} = \frac{9.8 \text{ g}}{40.08 \text{ g/mol}} \approx 0.244 \text{ moles}
\]
Therefore, there are approximately 0.244 moles of calcium in 9.8 grams.