How many atoms of sodium and chlorine are in table salt?

Answer 1

Table salt is Sodium Chloride (NaCl) - each molecule has one atom of sodium and one of chlorine.

The rough number of atoms can be calculated from the total weight of the salt. NaCl weighs approximately 58g/mol and 1mol is approximately 6*1023 atoms, so the number of mollecules in a weighed sample of pure table salt is (6*1023)/58=0.103*1023W where W is the weight in grams.

In one gram of NaCl, there are 10.3 billion trillion molecules and twice as many atoms split half Na and half Cl.