AP Chemistry
We continued to talk about entropy. We'll finish up tomorrow.
Accel Chem/ Chem 2
We continued to whiteboard problems on solutions and dilutions.
15. Describe how to prepare 1.00 L of a 0.495 M solution of urea, NH2CONH2, starting with a 3.07 M stock solution.
18. A student wants to prepare .600 L of a stock solution of cupper(II) chloride so that 20.0 mL of the stock solution diluted by adding 130.0 mL of water will yield a .250 M solution. What mass of CuCl should be used to make the stock solution?
19. you have a bottle containing a 2.15 M BaCl2 solution. you must tell other students how to dilute this solution to get various volumes of a 0.65 M BaCl2 solution. By what factor will you tell them to dilute the stock solution? in other words, when a student removes any volume, V, of a stock solution, how many times V of a water should be added to dilute to 0.65 M?
No comments:
Post a Comment