Describe in detail how you would make one molar solution of sodium chloride.

Do I add the atomic masses of Na and Cl and then find the mols?

And the after that you would just add 1L of water, correct?

1 answer

Almost.
Yes, you add atomic mass Na to atomic mass Cl. Weigh that amount of NaCl, dissolve it in a litle water, then make to a final volume of 1 L. Note that this is NOT the same as adding 1 L of water. If you weigh 1 mol NaCl and add 1 L water the final volume will be MORE than 1 L. To get the final volume to be 1 L, one must dissolve the NaCl in a little water, then add enough water to make a final volume of 1 L.