Transmittance

The purpose of this lab is to determine the Ka of an indicator within an unknown solution. This can be determined because acid-base indicators are weak bases or acids, and when neutralized they change colors. The color change is measured by the light absorption spectra in the compound which can be used to calculate the concentration. This experiment measures the concentrations by the different pH values which allows the pKa and Ka to be determined. Through the experiment, and the recorded color…

type of photocatalyst. Photocatalyst film can be deposited on various substrate such as alumina [5], metal foil [6], silicon wafer [7,8], and glass [9,10]. Among these substrates, the glass can be advantageous in various fields owing its high transmittance and chemical stability. The glass coated with photocatalyst…

Enzymes are macromolecules that act as a catalyst in order for chemical reactions to occur. Their function is highly dependent on what the structure of the enzyme because they have things called active sites that recognize specific substrates. A substrate is a molecule that fits into the active sites of enzymes so a reaction can occur. For example, sucrose (substrate) fits into sucrase (enzyme) where hydrolysis occurs consequently splitting sucrose into glucose and fructose. However, in our…

treatments when looking at spinach. The same spinach plant was tested under different light environments (no light, white light, red light and green light). A control cuvette was used to compare the rate of photosynthesis to those of the color transmittance cuvette. Before collecting the data we learned about plants and light absorption. We learned the reason why plants are green is because it emits green color and the other transmitted colors are absorbed by the plant. Using our new information…

Intelligence. Communication Intelligence (COMINT) was the most common source of intelligence used in the Battle of Midway. Morse code was the primary transmittance of intelligence for both sides (A&E Networks, 2014). Neither side had an advantage in the equipment, but the US Commanders trusted the intelligence more. The US utilized decrypted Japanese radio intercepts to gain the advantage during the battle (A&E Networks, 2014). US Navy cryptanalysts had begun breaking Japanese communication…

Macroevolution Paper Interviewing two subjects with different backgrounds was my part in this larger class project. I choose to interview a boy and a girl from the same age but different backgrounds in order to understand how microevolution works between them. I choose to interview a girl from my class that is also in my age group and the boy is a close relative and friend who is also the same age, I wanted to interview him because we share similar beliefs. In this interview I will determine how…

In the 21st century, a letter can be sent through email virtually to people half way across the world in a matter of seconds, a virus can travel just as fast and just as far. A virus is an infective agent that is able to multiply within the living cells of a host, often creating diseases. The Zika virus is a famous mosquito borne virus transmitted by physical contact with the mosquito. In this day and age, Zika Virus is spreading from country to country, bringing each nation to its knees with…

In this experiment we aim to that % hemolysis is going to decrease as osmolality increases because the more concentrate is the solution, the less cells going through hemolysis. Thus, there is not enough water entering the cell to produces the cells to burst. The main clue is when the water is completely dilute, so we have 100% hemolysis. Hemolysis is correlated with the behavior of the cell specifically refers as hypotonic. The results correlated with the raised hypothesis, the data overall…

records keystrokes as they type. It communicates recorded activities such as your social security, files, usernames, passwords and account numbers. The spyware transmits that information to another computer, usually for advertising purposes. The transmittance of this information can lead to identity theft. If you download free music or screensavers, it may also install spyware. Signs that spyware could possibly be on a computer is that the user receives a barrage of pop-up ads, the Internet…

property of light with material through which the light is travelling.4 So, if all the light passes through a solution without any absorption, then absorbance is zero, and the percent transmitted is 100%. If all the light is absorbed, then percent transmittance is zero, and absorption is infinite.3-4 There are many forms of this equation however the formula A=Ɛlc, explains how absorbance is directly proportional to the other parameters, as long as the law is obeyed. A=Ɛlc, also tells us that…