NaC2H3O2 SrSO4 BaS AlPO4
Answer should be 3
But should memorize this table and answer accordingly
Hey there Lindsey!
So the correct answer is actually 2 of these compounds will be insoluble in water.
They are SrSO4 and AlPO4.
It's a good idea to memorize the solubility rules. You can find a helpful video on our site, if you search on your dashboard, where Jules talks about this.
Please let us know if you need any more help.