how many moles of NaCl are in a box of salt containing 425g NaCl (g/mol)
mols = grams/molar mass
To find the number of moles of NaCl in a given amount of salt, you need to divide the mass of NaCl by its molar mass. The molar mass of NaCl is the sum of the atomic masses of one sodium atom (Na) and one chlorine atom (Cl).
The atomic mass of sodium (Na) is approximately 22.99 g/mol, and the atomic mass of chlorine (Cl) is approximately 35.45 g/mol. Adding these two values together gives us the molar mass of NaCl: 22.99 g/mol + 35.45 g/mol = 58.44 g/mol.
Now, you can calculate the number of moles:
Number of moles = Mass of NaCl / Molar mass of NaCl
Plugging in the given values, we have:
Number of moles = 425 g NaCl / 58.44 g/mol ≈ 7.28 moles of NaCl
Therefore, there are approximately 7.28 moles of NaCl in a box of salt containing 425 g of NaCl.