Monday, November 24, 2008
Mon-Day 2
AP Chem- we looked at a rather challenging (at this time) set of reactions/descriptive chemistry, which , along with the set of reactions from last week, we will cover tomorrow.
You received thermodynamic data tables for both substances and aqueous ions (mixtures). A different standard is used for aqueous ions because they are not just a single substance (the ions are dissolved in WATER); the reference standard for change in enthalpy by which all other enthalpy changes for the dissolving of ions is measured is the H+ aqueous ion. The H+ aqueous ion is given the convenient reference value of ZERO kJ/mol.
So, use Hess's Law, as applied to aqueous ions, in the same way that you would do for any other Hess's Law problem.
Bio 6- we reviewed how and why of the factors that influence the rate of photosynthesis and drew graphs of each factor as the independent variable. We even saw that color type could be used as an independent variable that influenced photosynthetic rate.
We then began to discuss leaf structure, showing how the various layers function individually and then work together to ensure that the plant can efficiently maintain homeostasis and perform photosynthesis.
Bio 7/8- we reviewed how and why of the factors that influence the rate of photosynthesis and drew graphs of each factor as the independent variable. We even saw that color type could be used as an independent variable that influenced photosynthetic rate.
We then began to discuss leaf structure, showing how the various layers function individually and then work together to ensure that the plant can efficiently maintain homeostasis and perform photosynthesis.
We started a lab investigating the effect of (independent variable) varying light intensity on the (dependent variable) rate of photosynthesis as measured by the rate of production of oxygen bubbles, one of the products of photosynthesis. I'll have to check what went wrong with the lab; the lab usually works well and results are rapidly seen!
You received thermodynamic data tables for both substances and aqueous ions (mixtures). A different standard is used for aqueous ions because they are not just a single substance (the ions are dissolved in WATER); the reference standard for change in enthalpy by which all other enthalpy changes for the dissolving of ions is measured is the H+ aqueous ion. The H+ aqueous ion is given the convenient reference value of ZERO kJ/mol.
So, use Hess's Law, as applied to aqueous ions, in the same way that you would do for any other Hess's Law problem.
Bio 6- we reviewed how and why of the factors that influence the rate of photosynthesis and drew graphs of each factor as the independent variable. We even saw that color type could be used as an independent variable that influenced photosynthetic rate.
We then began to discuss leaf structure, showing how the various layers function individually and then work together to ensure that the plant can efficiently maintain homeostasis and perform photosynthesis.
Bio 7/8- we reviewed how and why of the factors that influence the rate of photosynthesis and drew graphs of each factor as the independent variable. We even saw that color type could be used as an independent variable that influenced photosynthetic rate.
We then began to discuss leaf structure, showing how the various layers function individually and then work together to ensure that the plant can efficiently maintain homeostasis and perform photosynthesis.
We started a lab investigating the effect of (independent variable) varying light intensity on the (dependent variable) rate of photosynthesis as measured by the rate of production of oxygen bubbles, one of the products of photosynthesis. I'll have to check what went wrong with the lab; the lab usually works well and results are rapidly seen!
# posted by C @ 1:48 PM 
