Plz help! I am really stuck

Question

What is the molarity of a solution prepared by dissolving 20.0 grams of NaOH in sufficient water to make a solution with a total volume of 2.40 liters? (5 points)

0.120 M NaOH

0.208 M NaOH

0.416 M NaOH

0.833 M NaOH

Answer 1

First, convert the grams of NaOH to moles.

(20.0g) X (1 mol NaOH / 39.998g) = 0.500 mol

Next, determine the molarity:

0.500 mol / 2.40 L = 0.208M