3qs

Recently in anatomy class we took our final we did diagrams and test questions and multiple choice. I think I did fairly well except the fact that I forgot all the muscles and I forgot my notebook at home. In AP Chemistry class we tie dyed for our final. It was fun. What I'm doing next is graduating. I can't wait. I'm still thinking about where I want to go, I have a good scholarship here but I also have a good scholarship to University of Dallas, and they want me to play soccer. What I'm going to do in the future is learn from my mistakes and AP Chemistry quit procrastinating and when it gets tough don't quit.

3 Qs

ecently in anatomy class we learned about the urinary system. we learned about the kidneys and filtration and secretion. we also got to make urine which is pretty cool. We used stimulated blood type A & B and put it in dialysis  tubing,  then we tied up the dialysis tubing from end to end and place it in a cup of DI water. We also recently had a take home test for the urinary system. in AP chemistry we finished our equilibrium unit and are now reviewing for the AP test. we took a practice AP test and are now looking at the areas we need to hit up on.   I hope to do well on the AP test.

3 Questions

Recently I have learned about pH and Poh in AP chemistry and that's learned about the respiratory system in anatomy. I learned about how co2 is diffuse through the body and how o2 is diffused to the body as well. we have a lab coming up determining an unknown acid concentration by titration which we will be able to determine by its Poh and pH levels. I hope to ace my respiratory system test in anatomy. I also hope to go in and see Ms. Gardner whenever I am unsure about a concept in chemistry.

Colorimetry in pH levels

The difference in pH between an acid and a base is the measurements on a pH scale. An acid is below 7, and a base is above 7. When they cancel each other out its a 7, which is neutral. An acid is a proton donor, while a base is a proton reciever. pH= -log[H+] and pOH=-log[OH-]. The relationship between pH and pOH is that they both equal 14. The product of the concentrations of hydrogen ions and hydroxide ions equals Kw. pH indicators are substances, usually a weak acid or base, that changes color depending on the pH of the solution it is mixed with. Indicators don't change color sharply at one particular pH level. They change over a narrow range of pH. And this color change interval is different for each indicator. The difference that we observe between UI and other indicators is the composition of the indicator whether it is a base or acid and the color. I would choose different indicators. Although a pH of 5 and pH of 9 might seem close, they are very different on the pH scale, so it would be better to use different indicators. Indicators react with the hydrogen or hydroxide ions in the different substances. They change its formula and color to qualitatively show a pH or pOH scale. Most indicators only show a certain range of colors like Methyl orange or meta cresol, because of its limited pH indicators. The UI has the ability to show all the colors on the pH scale whereas  Methyl orange could only show colors ranging from red to yellow and  bromothymol blue can only show colors ranging from yellow to blue. 

Equilibrium Explore Lab



Dinitrogen Tentroxide

Nitrogen Dioxide

In each test tube was the Nitrogen Dioxide (NO2) and the Dinitrogen Tentroxide (N2O4). The No2 is favored by the heat and produces a orange yellowish gas. The N2O4 is colorless and is favored by the cold. The formation from  2NO2 ----> N2O4 is exothermic. The reverse reaction is endothermic because there is an increase in energy needed to break bonds. The formation of  N2O4 releases more energy and the energy reversed requires a lot more due to the creation of 2 NO2. The rate of the reaction in both reactions is equal. Its the same in the reverse reaction as it is in the forward reaction. The change in color provides the evidence that one chemical was more favored in the other. This color change indicates a change in concentration, causing a change in energy, causing a different change in equilibrium. Because the color change the equilibrium changes. Equilibrium Is established in different temperatures. It wants to adjust and find a new equilibrium when the color changes. The reactions are happening continually and simultaneously. All three different points of the reaction were at equilibrium, but they were all at different points because of the change in temperature. The equation is ;

                                                         2NO2------><------- N2O4
The enthalpy for the forward reaction is -58.8 KJ/ mol of N2O2, and the enthalpy of the reverse reaction will be +58.8 KJ/ mol of 2No2. In the LeChatelier's principle is used to manipulate the outcomes of reversible reactions, often to increase the yield of reactions.

3 questions

Recently I've learned about kinetics. I taking the test over kinetics in my AP Chemistry class. I hope to do well on that test. we just started a new unit on equilibrium. this will be our last chapter before reviewing for the AP chemistry test. we gotta work sheet over it to do during spring break, it's pretty easy. We just finished the cardiovascular system in anatomy and I got the highest score on the test. I think we're learning about the urinary system next. I hope in this next chapter for chemistry that I will go in during lunch. whenever I need help or are you stuck on something instead of just hiding my problems go in and ask for help.

3 Questions

Recently I've learned about the blood in anatomy and kinetics in ap chemistry. I've I've learned about blood types and the cardiac output, also the anatomy of the heart. In Ap chemistry I learned about reaction mechanisms and half lives and catalysts. I'm still struggling with some of the mathematical concepts in this class and I hope to come in during lunch.