Thursday, May 12

Section 2H: If you were not in class today, you must stop by tomorrow during CP for a few minutes to collect your chromatography lab data. You will complete the lab over the weekend. 

Section 4: Finish your lab and answer the following questions in your notebook. You should use the equation we used at the end of class (also, never forget about your textbook - we're in chapter 12!):

Molarity = moles of solute/L of solution 

1.      What does molarity mean? 

2.      What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution?

3.      What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10^-2 liters of solution?

4.      A flask contains 85.5 g C₁₂H₂₂O₁₁ (sucrose) in 1.00 liters of solution.  What is the molarity?

5.      A beaker contains 214.2 grams osmium (III) fluoride in 0.0673 liters of solution.  What is the molarity?

6.      Calculate the molarity if a flask contains 1.54 moles potassium sulfate in 125 ml of solution.

7.      A chalice contains 36.45 grams ammonium chlorite in 2.36 liters of solution - calculate the molarity.