What is the mass of sodium in 50 grams of salt? show your work.

19,7g of Na

Explanation:

The molecular formula of common salt is NaCl, the molar mass is molar mass of Na + molar mass of Cl:

22,99g/mol  + 35,45 g/mol = 58,44 g/mol

Thus, 50g of NaCl contains:

50g × (1mol / 58,44g) = 0,856 moles.

If 1 mole of Na are 22,99g, 0,856 moles are:

0,856 moles × (22,99g / 1mol) = 19,7g of Na

I hope it helps!