Chemistry Lab : A Dark Night On Campus

6-3: This process is used by cells to manufacture _biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products__

The purpose of this lab is to test substances and to determine the physical and chemical properties of substances.

The proof (twice the % alcohol) starts at its maximum and goes down (as the alcohol evaporates). If we start with a high concentration of alcohol, we will get the azeotrope (95% alcohol, 5% water) for a while, then the concentration will decrease.

Day 1. Michael was coming home for vacation from college. When he got home he found out that

3.6.1. BAP (Benzyl amino purine) stock solution (2mg/ml): 20mg of BAP being weighed and dissolved completely in 1N NaOH to a final total volume of 10 ml with autoclaved double distilled water to obtain a stock concentration of 2mg/ml was prepared and stored in clean autoclaved vials at -4°C.

Purpose: The purpose of this lab activity is to help understand observation and interpretation and to distinguish one from another all while analyzing the chemical reaction. You will see what happens when you put a beaker with water in it and then put dry copper and after that put aluminum foil in and see the observations and interpretation in the chemical reaction.

1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow

5. Zoom Out by clicking on the green arrow next to the Save button. Click on the Stockroom and then on the Clipboard and select Balloon Experiment N2. Again, set the temperature, pressure, and moles to 298 K, 1.00 atm, and 0.300 moles, respectively. You may have to click on the Units button to change some of the variables to the correct units. Repeat the experiment with this gas labeling the data link ‘Real Gas N2.’

In experiment 3.11, we found out whether or not a larger amount of a liquid would get hotter when it boils. To answer this, we heated a specific amount of unknown liquid and recorded the temperature every fifteen seconds. In our scatter plot, we were able to find the boiling point of our liquid. We know that the slope of our graphs is when the liquid molecules were moving around and heating up. The plateau of our graph points is where the liquid started to evaporate and boil. This is were we found our boiling point at. Shantel and I decided that our boiling point was about 98º Celsius. If you had another slope in your graph, that was when you were simply heating the leftover gas. The histogram showed us that there were about equal amounts of data in the higher temperature (about 95º Celsius) bins for both 20mL of liquid and 10mL of liquid. Also, in the lower temperature bins (75º to 80º Celsius) there was about equal amount of data for 20mL of liquid and 10mL of liquid. There was 7 pieces of data for 10mL of liquid in the lower bins, and 6 pieces of data for 20mL of liquid. If a larger amount of liquid did have a higher boiling point, the clusters would be organized by volumes or amount. For example, all of the 20mL pieces of data would be in the higher temperature bins, and all of the 10mL pieces of data would be in the lower temperature bins or flipped. Rather, the bins were clustered by identity. The boiling point is a characteristic property.

I printed out pictures of us dancing at the Best Buddies ball to keep for a memory, and sure enough it ended up taped on his desk in school. Nic is one of the sweetest and funniest kids I have ever met. The next year, I was fortunate enough to become his buddy once again. We continued to go to all of the chapter parties and dances together, and we saw each other whenever possible.

Girls perch on the tables like exotic birds gossiping and giggling, a football fly’s above their heads between two jocks in varsity jackets parading their toned muscles. Groups of high schoolers sit around the room laughing. Weekend has arrived and the hallways of the school were filled with tons of kids ready to go home. Every ear filled with the sound of multiple conversations going off at once, lockers opening and closing, music blasting without. I had managed to push past the constant stream of children and to the school field. The grass was damp and covered in a thin layer of frost. As I walked my footprints were embedded, leaving a piece of me in the cold ground. I saw my friends faraway chattering and fooling around. I was stuck in the wrong crowd; they are nothing like me but somehow I am still friends with them. I slowly made my way up to my “so called friends”.

I still remember the first time met him, it was in his second Summer OPS, but was my first summer in St. John’s Northwestern Military Academy. So, we became the roomates. He was so kind and nice, he always helped me with his smile. As an international student in a military school, he taught me how to play by the roles. In the academic area, he assisted me to fix my English pronunciation and also tutor my literature class. Individually, he always got 3.5 or above GPA; He spent one school year achieving 5 military

Dispense .5 mL water into the already weighed conical vial, replace cap and face insert on its down side.

Bimpe and I met back in the spring of 2011 at the University of Missouri Kansas-City. We were both undergraduate students then and Bimpe had a job as an assistant to the department chair. One beautiful morning, I decided to walk one of my lecturers to his office after a class, while I used the opportunity to ask him a few questions. Bimpe had her office right by the entrance into the departmental offices and immediately I walked in with the professor, I saw a young lady working on the computer. I was introduced to her by my professor. We started talking and kept talking, and that was the beginning of our relationship.

The first question was which of the samples would float on top of water? The answer is oil because it is less dense than water. Ethanol and 2-propanol don’t float because they have a greater density than water. The second question is if you wanted to make layers for the four liquids in a graduated cylinder, in what order would you pour the liquids into the cylinder? The answer is 2-proponal, ethanol, oil, and water.