The first step is to calibrate the colorimeter with0.20 M Fe(NO3)3and set the absorbance at 470 nm since it is known to keep an acidic solution throughout the entirety of the experiment. It was important to do this right at the beginning of the lab since the zeroed value of the acid was the calibration number for all of the other solutions. A total of seven solutions with different dilutions were used throughout the lab to conduct the equilibrium constant. The first step was adding 5 mL of 0.200 M Fe(NO3)3to each of the 5 test tubes. Once this was done, 0.00200 M NCS was added to the test tubes, each receiving a different amount; test tube one received 1 mL NCS-and with each test tube the amount of NCS-would increase by 1 mL, test tube 5 received 5 mL of NCS. . The next step was adding HNO3 to each test tube in different volumes; Test tube one received 10 mL of HNO3 and with each test tube the amount of HNO3 decreased by 1 mL, test tube five had no HNO3 added to it. The addition of these solutions formed five test tubes of different dilutions, but of equal volume, 10 mL each. After all of the previous trials had been completed the final step was to take each test tube and pour it into a different cuvette and measure the absorbance for each. Once the initial concentration was calculated of Fe3+, NCS and FeNCS2+ in molarity. The absorbency values were recorded and used to calculate the formation constant, K f The reference table containing volumes used in each solution is provided below…
In order to experiment with distinct components of a mixture, they must be first separated so they can be observed individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase, which the TLC plates as well as a mobile phase, which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result, nonpolar substances travel further than polar substances in this process. The separation of a mixture into its components by TLC transpires because the distinctive components of a mixture interact to different extents with the stationary and mobile phases.…
The element calcium’s name first originated from the Latin name “calx” which means “lime”. It was first discovered in England during the year 1808 by Sir Humphry Davy. He was able to separate calcium into a pure metal by doing an electrolysis process on a mixture of lime HgO, which is mercuric oxide. However, Sir Humphry Davy was not able to do this until after he found out Berzelius and Pontin electrolysed lime into mercury which constructed calcium amalgam. Although he discovered calcium in 1808, calcium metal was not available in large amounts until the beginning of the twentieth century. Before the autumn of 1808, John Dalton, an Englishman, explained the results of his own studies by supposing matter is composed of atoms. He supposed that…
Percent Recovery: Indicates how much of the active ingredient was able to recover after the purification method.…
Calcium Carbonate is found naturally in food products. It is needed for everyday, common body activities. Calcium Carbonate is used to prevent Calcium deficiencies. Some common names for Calcium Carbonate in the medical industry are Tums, Alka-Mints, and Maalox. Calcium Carbonate has other uses besides medical purposes, such as building materials and construction, and paper, plastics, paints, and coatings. You can also find it in chalk, limestone, and marble. Calcium Carbonate is able to be extracted from marble in a pure form. It is also able to be prepared when Carbon Dioxide is put through Calcium…
Xanthan gum is a commercial food which is mainly popular amongst the gluten free baked goods. That is mainly because of the elasticity it offers to the dough. We will have to make sure that we are taking proper knowledge whether eating this is good for health or not. This is mainly because of the health conscious people and the things that we will have to make sure while we are planning to get the best food that is more helpful for them.…
The Citric Acid Cycle is a series of enzyme-catalysed reactions that take place in the mitochondrial matrix of all aerobic organisms. It involves the oxidation of the acetyl group of acetyl CoA to two molecules of carbon dioxide. Each cycle produces one molecule of ATP by substrate-level phosphorylation, and reduces three molecules of NAD and one molecule of FAD for use in Oxidative Phosphorylation. The cycle is preceded by Glycolysis, which also occurs in anaerobic respiration, and the pyruvate dehydrogenase complex, which occur in the cytoplasm and the mitochondrial matrix respectively. In aerobic respiration, glycolysis breaks down one molecule of glucose and two molecules of pyruvate, and gives a net product…
Acetylsalicylic acid (ASA), or more commonly known as aspirin, is a medication that can be used for pain, fevers, and inflammation. It can be used for long periods of time, in small amounts, to prevent heart attacks, strokes and the formation of blood clots. A heart attack victim can be given a low dose right after the ordeal to reduce the risk of another one. Side effects of this drug is ulcers, internal bleeding (stomach) and ringing in the ears. These mainly happen with higher doses of aspirin.…
Creatine's organic role cannot be disparaged. It assumes a key biological role for mammals, fish, reptiles and amphibians. Creatine helps muscles in delivering adenosine triphosphate (ATP), the substance that facilitates blasts of energy down to the cellular level. Creatine is put away in muscle cells as phosphocreatine and is utilized to produce cell vitality for muscle compressions. The phosphate of ATP is exchanged to creatine, producing creatine phosphate, through the activity of creatine phosphokinase. Creatine phosphate is a storage type of rapid energy. Creatine keeps the body from depending entirely on the procedure of glycolysis, which delivers a net of two ATP…
LycoLife drinks containing concentrated lycopene are a great alternative to tomato drinks, for people who do not like the pure taste of tomato juice. LycoLife is a fruity and refreshing drink that is an excellent addition to a healthy diet.…
In the short story titled, ¨Shortcut¨ by Nancy Werlin, Lacey the protagonist learns that everyone deserves a chance. Lacey thought poorly of Catrine and really didn’t like her. “Catrine was the definition of unacceptable…. acne wasteland of a face….hunched shoulders….the one everybody laughed at.” Even though Lacey didn’t like Catrine she still thought that she deserved a chance, a chance to know about Will’s plan to attack her.…
Essay Question: Although the 13 American colonies were founded at different times by people with different motives and with different form of colonial charters and political organization, and the 13 colonies had become remarkably similar. Assess the validity of this statement.…
Clomiphene citrate is a type of medication whose purpose is to cause ovulation in women who have problems conceiving. Also known as Clomid, Serophene, or Milophene, the drug causes ovulation by stimulating hormonal release into the blood. A patient undertaking the therapy has to use the medication for five days, consecutively, for the desired effect.…
When comparing the two categories of nutrient standards, the Dietary Reference Intakes and the Daily Values, one difference between the two is:…
Introduction: Lycopene is a carotene because of its carbon and hydrogen composition. It is red in color and a member of the carotenoid family. Members of the carotenoid family play integral roles in plants. They use the absorption of light to aid in photosynthesis, and protect chlorophyll from damage. In humans, Lycopene acts as an antioxidant. Lycopene is found in various fruits and vegetables.…