Answer:
You don't find how many moles are in 1 gram, but rather you find how many grams are in 1 mole.
Na = 23
Cl = 34.5
Total = 57.5 g in 1 mole NaCl
3 moles NaCl x 57.5 g/mole = 172.5 grams in 3 mole
Explanation:
