Question

There are ___ mol of chloride ions in 0.500 L of a 0.300M solution of AlCl3
I know the first step is 0.300 x 0.500 = 0.150 mol
and that the answer is 0.450

Answer 1

There are 0.150 moles of the AlCl3 solution. But you need to use stoichiometry to mind the moles of chlorine in it.

Answer 2

0.150 moles of AlCl3*

Answer 3

So how exactly do I do that @iPwnBunnies ?

Answer 4

You should know how to do that by now.
As you can see in AlCl3, there are 3 moles of Cl for every 1 mole of AlCl3.
So, 0.150 mol AlCl3 * (3 mol Cl per mol AlCl3)

Answer 5

Okay. Got it.