How many moles are present in 22 grams of sodium (Na)?

To determine the number of moles present in 22 grams of sodium (Na), it's essential to use the concept of molar mass. The molar mass of sodium is approximately 23 grams per mole. This means that one mole of sodium weighs 23 grams.

To calculate the number of moles in 22 grams, you can use the formula:

Number of moles = mass (grams) / molar mass (grams/mole).

Substituting the known values:

Number of moles = 22 grams / 23 grams/mole = 0.9565 moles.

While this calculation reveals that there are slightly less than 1 mole of sodium in 22 grams, the closest whole number is 1 mole. Although 0.9565 does not equate precisely to 1, based on standard rounding practices related to molar calculations and relative atomic masses being typically rounded, it allows for the conclusion that 1 mole of sodium can be assumed when looking for a straightforward answer in this multiple-choice format.

Recognizing this context, the most appropriate choice from the list provided aligns with 1 mole, given that it most closely approximates the answer derived from the calculation. Thus, the reasoning behind selecting this option