Answer: The number of moles of magnesium in given amount is 0.2056 moles.
Explanation:
To calculate the number of moles, we use the equation:
\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\)
We are given:
Given mass of magnesium = 5 g
Molar mass of magnesium = 24.31 g/mol
Putting values in above equation, we get:
\(\text{Moles of magnesium}=\frac{5g}{24.31g/mol}=0.2056mol\)
Hence, the number of moles of magnesium in given amount is 0.2056 moles.
