To the nearest whole number, what is the number of moles of 234 grams
of sodium chloride?

4

Explanation:

According to the NYS Reference Table, one mole of sodium equates to approximately 22.98977 grams and one mole of chlorine equates to 35.453 grams. Since one molecule of sodium chloride contains one mole of each element, we should add the two gram amounts. If we include significant figures, the amount totals to 58.443 grams. The prompt asks for 234 grams, so we divide 234 by 58.443. This gives us an approximate answer of 4 moles.