Chemistry

1. Temperature: high temperature accelerate oxidation, reduction and hydrolysis reaction which lead to drug degradation 2. pH: • Acidic and alkaline pH influences the rate of decomposition of most drugs. • Many drugs are stable between pH 4 and 8. • Weekly acidic and basic drugs show good solubility when they are ionized and they also decompose faster when they are ionized. • So if the pH of a drug solution has to be adjusted to improve solubility and the resultant pH leads to instability then a

The activity was separated into 4 parts concerning 5 different groups of elements. In the first part, we had identified the physical state, the color, and the solubility in water of the Carbonates of I-A and II-A Elements. The elements Na2 Co3, Li2 CO3, Mg CO3, Ca CO3 had a powdery appearance while Ba CO3 had a ball shape appearance and K2 CO3 had a wet, granule appearance. All of the elements stated have a white color. The elements Na2 Co3, Li2 CO3, K2 CO3 were soluble to water while Mg CO3 Ca CO3

Name: Date: Graded Assignment Unit Test, Part 2 Answer the questions below. Unless otherwise instructed, you may use a scientific calculator for this test. When you have finished, submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. Nitroglycerine (C3H5(NO3)) is a powerful explosive. The products of this reaction are elemental oxygen, elemental nitrogen, water, and carbon dioxide. The Gibbs free energy for this reaction is negative at 273 K. Determine whether

1. Substances A and B have an appearance of a white solid like. Substances A and B were put into a test tube and on the Bunsen burner. As a result, B melted faster than A. A was slow to melt. The reason why B melted faster than A is because it has a lower boiling point than substance A which made it melt faster. It also shows that A needs more energy than B to be broken down. 2. Substance A and B were weighed; Substance A weighed 0.502 g and substance B weighed 0.503 g. Both substances were put

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. 3.6.2. IAA (Indole 3 acetic acid) stock solution (10mM): 1.0mg of IAA being weighed and dissolved completely in acetone to a final total volume of 10 ml with autoclaved double distilled water to obtain a stock

The experiment was divided into two parts. Part A was to recover the copper metal using the copper cycle method and part B was to observed copper (I) compounds. Every copper complexes and compounds indicated in the experiment was observed very carefully. Any chemical changes in each step were recorded at instant. Such as, In Part B copper (II) nitrate was combined with sodium hydroxide to form an light blue precipitate of copper (II) hydroxide which upon heating, gives us a black colored precipitate

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

1. What reagents were used during the experiment, and were some reagents unknown? " Mixture #29, which contained fluorene and either 2-chlorobenzoic acid, 3-chlorobenzoic acid, or 3-methyl benzoic acid was used. NaOH, diethyl acetate, and HCl were also used. 2. Which reactions occurred between those reagents? Why was the experiment performed? " The unknown acid was deprotonated by NaOH and protonated by HCl. The experiment was performed to separate the unknown acid from fluorene and to identify the

much from working and competing in Science Olympiad. There were four competitions that were scheduled for me to compete in: Forensics, Chemistry Lab, Game On and Electric Vehicle. There was a lot of preparation and commitment that had to be put in. A slight mishap happened in Forensics we found out that only two teams could compete, so my team had to drop out , Chemistry Lab was mainly basic kinetics and gas laws during Game On we had to learn Scratch and then use that knowledge to create a game, The

Can chemistry shape humanity and their daily lives? How has pharmaceuticals developed? Chemistry has shaped our world today in many ways. From cooking to medicine. Pharmaceuticals have developed and made our world way easier to fight against diseases and illnesses. Pharmaceutical science developed in the 16th and 17th century. It was something we found necessary and developed overtime to fulfill humanities necessities. Pharmaceutical scientists are typically involved in the development of new drugs