How many grams are in 4.00 mol of sodium chloride? (NaCl)

Can you show your work/formula? I feel like if I see this done once, I might be able to figure out how to do others.

Find the molar mass for NaCl = 23.0 + 35.5 = 58.5g/mole.

This tells you the number of grams in 1 mole.

So multiply that by the number of moles.
4.00 moles x [58.5g / 1mole] = 234g NaCl.

Check for significant digits;
There are 3 digits in 4.00, so your answer (and the masses you look up) should have 3 digits.

4 moles NaCl * 58.5 grams NaCl = 234 grams NaCl
......................-----------------…

.....................1 mole NaCl

Moles cancel out and you are left with 234 grams of NaCl. [To get molar mass take the molecular weight of Na added to the molecular weight of Cl]

Enjoy.