Chemistry 12:  Today I collected the WS on Precipitation Reactions.  We worked through a few solubility problems together, and time was given to complete U3 # 40-51.  You have no homework to do over Spring Break.

42.K_sp = 3.0 x 10^-11

43.  [Zn2+] = 4.5 x 10^-13 

44.  0.20 g PbSO₄

45.  0.028 g BaCrO₄

46.  K_sp = 0.00194

47.  [Ag₂CrO₄] = 6.5 x 10^-5

48.  1.1 g/L CaSO₄

49.  2.1 x 10^-4 g/L 

50.  K_sp = 1.1 x 10^-49

51.  1.2 x 10^-10 

March 17, 2022

Science 9:  Took notes on Sexual Reproduction, read pg 81 and copied table 1 into notes, then did lab 3A questions a-d and g.