2. If 1.204 X 1024 atoms of sodium is 20% of the total sodium atoms in sodium chloride NaCl), how many grams of salt do you have ?

584.2 g

Explanation:

Hello there!

In this case, since we know the 20% of the atoms correspond to sodium, we can compute the total atoms as shown below:

Which are also equal to 1 mol and the Avogadro's number of sodium chloride with a molar mass of 58.44 g/mol; thus, the grams of salt turn out to be:

Best regards!

1.solid

2.carbon dioxide

3.helium

your answer would be “dry”