posted by Dennis .
what is the mass of two moles of NaCl?
You look up the exact numbers on the periodic table or some other chart. I will use approximations.
1 mol NaCl = 1 Na + 1 Cl = 23 + 35.5 = 58.5 grams.
1 mols NaCl, then, is 2 x 58.5 = ?? g.