The molar mass of sodium chloride is calculated by adding the atomic masses of sodium (Na) and chlorine (Cl). The atomic mass of sodium is approximately 22.99 grams per mole, and the atomic mass of chlorine is approximately 35.45 grams per mole.
Adding these atomic masses together gives us:
22.99 g/mol (sodium) + 35.45 g/mol (chlorine) = 58.44 g/mol (sodium chloride)
Now, we can calculate the number of moles using the formula:
moles = mass / molar mass
moles = 58.5 g / 58.44 g/mol
moles ≈ 1 mole
Therefore, there are approximately 1 mole of sodium chloride in 58.5 grams.