A solution has 500 mL and contains 0,5 moles of AlCl3. What is its molarity?

The molarity is: 1 M

Explanation:

We define molarity as an amount of moles in 1000ml of solution (1 liter)

500ml0,5 moles AlCl3

1000mlx= (1000ml  x 0,5 moles AlCl3)/500ml = 1 moles ACl3--> 1 M

c. 4.54 x 10–12 j happens to be correct