1. Molarity (m)

2. What is different between the glasses of kool-aid?

3. Chemists can measure the concentration of a solution using molarity
Molarity= 𝑚𝑜𝑙𝑒𝑠 𝑜𝑓 𝑠𝑜𝑙𝑢𝑡𝑒 𝑙𝑖𝑡𝑒𝑟𝑠 𝑜𝑓 𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛 Units = mol/L or M or mol*dm-3

4. Ex. 1) Calculate the molarity of a solution prepared by dissolving 9
Ex.1) Calculate the molarity of a solution prepared by dissolving 9.8 moles of solid sodium hydroxide in enough water to make 3.63L of solution?

5. Ex.2) You dissolve 152.5g of copper (II) chloride in water to make a solution with a final volume of 2.25L. What is it’s molarity?

6. Ex. 3) A solution has a volume of 375 mL and contains 42
Ex.3) A solution has a volume of 375 mL and contains 42.5 g of sodium chloride. What is its molarity?

7. What if we want something to be less concentrated?
ntration/latest/concentration_en.html
Formula: M1V1 = M2V2

8. Ex.1) How many mL of a 2.50M NaOH solution are required to make 525 mL of a 0.150 M NaOH solution?

9. Ex.2) If 45.0 mL of a 6.00 M HCl solution are diluted to a final volume of L, what is the final concentration?