IIT/JEE Chemistry Practice #11: Moles/Molarity

Dave explains concepts of moles and molarity through two questions. The first involves calculating the concentration of a resulting solution from mixing two solutions. The second question focuses on determining the moles of magnesium phosphate containing a specific number of oxygen atoms. Key steps include understanding molarity, calculating moles, and using molecular formulas.

How many oxygen atoms are there per formula unit of magnesium phosphate?

What is the total number of moles of oxygen atoms contained in 0.25 moles of magnesium phosphate?