How many moles are in 22 grams of sodium (Na), given its molar mass is 23 g/mol?

To determine how many moles are present in 22 grams of sodium (Na), one can use the formula for calculating moles:

[

\text{Moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}

]

In this case, the mass of sodium is given as 22 grams, and the molar mass of sodium is provided as 23 g/mol. Plugging these values into the formula yields:

[

\text{Moles} = \frac{22 \text{ g}}{23 \text{ g/mol}} \approx 0.9565 \text{ mol}

]

Rounding to two decimal places leads us to about 0.96 mol of sodium. This calculation clearly shows that the correct amount of moles in 22 grams of sodium is approximately 0.96, making it the most accurate choice among the options provided.

Other calculations leading to the other numerical answers would not align with the molar mass given for sodium and the mass used in the calculation. Therefore, 0.96 moles precisely represents the amount of sodium present in the specified weight of 22 grams when considering its molar mass.