1. Determine the molar mass of NaCl:
* Sodium (Na) has a molar mass of 22.99 g/mol
* Chlorine (Cl) has a molar mass of 35.45 g/mol
* Molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol
2. Calculate the number of moles of NaCl:
* Moles = mass / molar mass
* Moles of NaCl = 38.1 g / 58.44 g/mol = 0.651 moles
3. Determine the number of moles of sodium ions (Na+):
* Since there is one sodium ion (Na+) for every molecule of NaCl, the number of moles of Na+ is the same as the number of moles of NaCl: 0.651 moles.
4. Calculate the number of sodium ions:
* Use Avogadro's number (6.022 x 10^23 ions/mol) to convert moles of Na+ to the number of ions:
* Number of Na+ ions = 0.651 moles * 6.022 x 10^23 ions/mol
* Number of Na+ ions ≈ 3.92 x 10^23 ions
Therefore, there are approximately 3.92 x 10^23 sodium ions present in 38.1 grams of sodium chloride.
