Chemistry 11: We began with the Moles Unit Test, then we finished the WS titled Writing Chemical Reaction Equations.  

Science 8:  After going over the Measuring Volume WS, we wrote notes together on the Kinetic Molecular Theory.  We read pgs 250 - 253.  Due next class are pgs 251 # 1-4 and 253 # 1-4.

Chemistry 12:  We looked at the Solubility Lab to guide us in differentiating the terms we will need today:  solubility, Ksp, concentration of ions and salts.   Due Thursday is Unit 3 # 42-51.   

Answer Key:  

42.  K_sp = 3.0 x 10 ^-11.              43.  K_sp = 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