Answer:
Step-by-step explanation:
Interesting way to teach molarity. Count the number of Black dots in Vessel 1. There are 4. There are also 4 clear dots. The number Ks = Cls
The molarity is 4 units of KCl/volume of vessel 1.
Now look at vessel 2. All you need do is count the black dots. There are fewer of them
There are 8 by my count. The volume hasn't changed but the black dots have doubled. That means there are 8 units of CaCl2 / volume of Vessel 2 (which is the same volume as Vessel one.)
The answer cannot be anything but D.
Before you count the clear dots in vessel two, make a guess of how many there should be. Notice the formula for CaCl2 has a two in it. Make your best guess and count away.