What mass of sodium chloride is produced if 92.0 g if sodium reacts with excess chlorine?

Well, the sodium has an atomic weight of 22.99 g/mol. Chlorine has an atomic weight of 35.45 g/mol. NaCl has an atomic weight of 58.44g/mol. Therefore, and making some calculations, we may say that 92g of sodium would yield 233.86g of sodium chloride

The reaction equation:

2Na + Cl₂ → 2NaCl

Molar ratio of Na to NaCl = 2 : 2 = 1

Moles of Na = 92/23

= 4

Moles of NaCl = 4

Mass NaCl = moles x Mr

= 234 grams