What is the mass percent of sodium in NaCl?

What is 23/(23+35) * 100

Na/NaCl = 23/(23+35.5) = .393 or 39.3%

To determine the mass percent of sodium (Na) in sodium chloride (NaCl), you need to know the molar mass of sodium (22.99 g/mol) and the molar mass of sodium chloride (58.44 g/mol).

The molar mass of NaCl is calculated by summing the atomic masses of sodium (Na) and chlorine (Cl) in one mole of NaCl. So, it is 22.99 g/mol + 35.45 g/mol = 58.44 g/mol.

To calculate the mass percent of sodium in NaCl, you divide the molar mass of sodium by the molar mass of NaCl and multiply by 100%.

Mass percent of sodium = (molar mass of sodium / molar mass of NaCl) x 100%

Mass percent of sodium = (22.99 g/mol / 58.44 g/mol) x 100% = 39.34%

Therefore, the mass percent of sodium in NaCl is approximately 39.34%.