The two solutions were combined in a microwave tube and put in the microwave for 30 minutes at 80oC. The solvent was evaporated under reduced…
In an inert gas environment TiCl4 was added slowly to water in an ice bath while being stirred with a magnetic stirrer. A clear transparent solution indicates a good workable solution. The solution was stored in a freezer. Second, the stock solution was diluted by adding it to cold DI water. Fresh diluted solution was made before each TiCl4 treatment.…
To begin Lab 10 of Chem 115, students received permission to start the lab procedure after completion of prelab. First, students made a 25.0 mL of a 0.15 M Malonic Acid and 0.20 M Manganese Sulfate Monohydrate solution and labeled it "Solution 1". After the solution was made, a piece of parafilm was used to seal the flask before mixing it well. Next, a 25.0 mL of a 0.20 M Potassium Iodate solution, using 0.080 M sulfuric acid as a solvent, was made. Before adding the acid, students heated about 25 mL of the acid in a 100 mL volumetric flask.…
Doc. Anthony Miller, a physicist, and an engineer, with him Doc. Stephen Strange who had the same expertise as Doc. Anthony Miller. They were transported to Area 51 which was a secret military facility, they were brought there to work on a project.…
The iodide’s position is opposite of the –OH group. Salicylamide and sodium iodide are dissolved in ethanol, and stirred and cooled to 0. After that household bleach was added while stirring vigorously, solution changed from colorless to pale yellow. Sodium thiosulphate and hydrochloric acid were added aswell.…
R.C. 5.9 Mathematics (Mobile Infant) Activity: “Stack Them Up” Materials: Stacking blocks, nesting cups, measuring cups Infants are continually growing in all areas of development. In this activity, the goal is to get the infant to stack their blocks or cups. The teacher would have the child sit on the floor or at a table with their toys.…
Materials. Numerous substances in the experiment were used. The most frequently used was the unknown due to the need to test its physical and chemical qualities. When a solution of the unknown was made, 1.000 g of the unknown and 1.0 mL of water was used to make it. To test for the possible ions, 1.0 mL of silver nitrate and 1.0 mL of nitric acid were used for the ion test.…
Snowman hesitated to go back to Rejooven Esense Compound because he refuse to relive his past. Snowman's past still remains a constant inner conflict; however, Snowman's inescapable past are at odds with his will to survive. Even thought Snowman hesitant to go back to Rejooven Esence Compound, he still have to travel back there in order to avoid dying of starvation. At this point in the story, the reader can infer that something tragic had happened to Snowman before at Rejooven Esence Compound that make him refuse to travel back there and relive/ remember his past.…
A macromolecule is a molecule that contains any "large number" of atoms. There are four main different categories of macromolecules that make up our body: carbohydrates, lipids, proteins, and nucleic acids. (1) Carbohydrates are sugars that store and transport energy. (2) Lipids also store energy and also are signalling molecules. (3) Proteins are linear chains of amino acids that help with the structure, function, and regulation of the body’s tissues and organs.…
In this lab, we carried out a variety of reactions using different chemicals and metals. A chemical reaction is when the chemical state of the substance you are testing rearranges its ionic and molecular structure. One of the reactions we experienced was single replacement, this consists of one ion switching places with another ion to form a new compound. Another reaction we saw was double replacement. In this reaction, two compounds ions are switched to form two new compounds.…
In the duration of this paper I will be describing the various aspects of what solutes and solvents are, and how there will be used during…
In this equation, x and y denotes the number of moles of RE and Mn atoms per formula unit of the structure, respectively. The RE and Mn represent the theoretical magnetic moment of trivalent free RE3+ ions and divalent Mn2+ ions respectively. The experimental values of total magnetic moments were found to be smaller than the calculated values (Table xyz). The crystal field effects can lead to lower value of magnetic moments for RE3+ ions in these compositions as compared to free RE3+ ions, which in turn could lower the total magnetic moment of these compositions. This discrepancy in the total magnetic moment values could also be due to the presence of secondary phases in these samples.…
However, our lab did not provide us with the hypothesized results, as no reaction occurred when the magnesium was burned, potentially due to an error in the process. The purpose of this lab is to identify and examine the oxidation-reduction…
During the entire lab, the main purpose was to, Identify the given unknown salt through a variety of experiments which yielded valuable quantitative and qualitative data. Before any experiments were carried out, multiple properties were compiled in order to have a source to compare the found results with. Beginning with the first experiment to determine if the unknown salt was hygroscopic, efflorescent, deliquescent or none of the above properties. This test was done through weighing an amount of the salt and reweighing after 15 minutes which would show if the salt had one of the above properties (either by gaining mass from the air, losing mass to the air, turning to solution) or none of the properties. Furthermore, tests were done to identify…
The solubility rules were used to determine which reactant was aqueous and which one was a solid. The solid is the precipitate formed in the reaction. The formation of the precipitate indicates that a chemical reaction occurred. If no precipitate formed the reaction would be labeled with DNR, which stands for does not react. The solubility rules states which elements are soluble or insoluble, including the exceptions for each rule.…