In this lab, we dissolved a calcium-enriched tablet and participate the calcium ion as calcium carbonate. Our purpose is to determine the masses of calcium carbonate and calcium ion, to determine the mass percent of calcium ion in the tablet and to compare the masses and the percent with the listed tablet ingredients. This time we used a 150mL beaker, analytical balance, forceps, a 50mL graduated cylinder, a glass rod, beaker tongs, a hot plate, two 16 x 125-mm test tubes, centrifuge, a medicine dropper, a filter paper, a filter funnel, a 250-mL Erlenmeyer flask, a watch glass, a drying oven, a spatula and a red litmus paper. The chemicals we need were 20mL of 2.0M HCl, a calcium-enriched tablet and 25mL of 1.0M Na2CO3 solution.…
Aspirin (1.30 g , 0.00722 mol), Caffeine (0.00666 g, 0.000350 mol) and Salicylamide (0.390 g, 0.00284 mol) were combined in a 100 mL beaker. To this beaker, ethyl acetate (20 mL) and saturated NaHCO3 (10 mL) were added. The organic and aqueous layers were allowed time to separate before the organic layer was removed and put aside. An additional portion of NaHCO3 solution (10 mL) was added and the separation was repeated. The aqueous layer was put aside in a beaker labeled “NaHCO3 Extract.” To the organic layer still in the separatory funnel, 3M HCl (10 mL) was…
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…
The data supported the hypothesis that if Daphnia are placed in differently concentrated solutions of barium and calcium chloride, then the highest concentration of calcium chloride would affect them the most because of the production of hydrochloric acid and calcium oxide from the mixing of water and calcium chloride, two very dangerous acids, with the highest concentration having the biggest chemical reaction. Within five minutes of putting the Daphnia into the 10 (ppt) solution of calcium chloride, one or more of the Daphnia died. The Daphnia in the 1 (ppt) solution of calcium chloride died before the Daphnia in the 1 (ppt) solution of barium chloride, and same with the .1 (ppt) solutions. Daphnia are freshwater organisms, so when they were exposed to saltwater, the pressure difference between their body fluids and the saltwater surrounding them forces the fluids out of them, resulting in…
1. In your own words, list the 5 characteristics an Earth material must have in order to be considered a mineral.…
By filtering and weighing the carbonate after it has precipitated, the mass and moles of CaCO3 could then be found; with these values, a molar mass of M2CO3 can be found. Using gravimetric analysis, it has been determined that the unknown Group 1 metal carbonate compound is K2CO3 (potassium carbonate).…
196. Calcium carbonate found in limestone and marble reacts with hydrochloric acid to form calcium chloride, carbon dioxide, and water according to the following equation: CaC03(s) + 2HC1 {aq) —♦…
|Mineral 2: Talc |50% certain |I am only half sure about this mineral because I know that Talc is shiny,…
What is Magnesium chloride(MgCl2)? What is it used for and why? What does it look like? Magnesium chloride is the name of a chemical formula of MG CL two. This is a salt and they are a typical ion halide. halides are very soluble to water. magnesium chloride is used for deicing on highways in sidewalks and also parking lots it is a good source of de-icing. The color that it appears is white or colorless crystalline solid. What is magnesium or what is chloride? whare are they located?…
1 Limestone contains the compound calcium carbonate, CaCO3. (a) Limestone is used to make cement in a rotary kiln. Waste gases Limestone and clay…
Describe the role of calcium in muscle contraction, where it is stored, and how it is released and recycled.…
Investigating the rate of reaction between Marble Chips (Calcium Carbonate) and hydrochloric acid Aim. In the investigation I am going to find out how the surface area affects the rate of reaction by measuring the amount of gas produced and weight loss in a reaction between small/large pieces of Marble Chips (Calcium Carbonate) and Hydrochloric acid per minute. Hypothesis.…
There are various types of essay that every High School, College and University students gets to encounter in the course of the academic program. Essays are typical writing assignments that require a writer to use personal input in order to convey an idea, present/defend an argument or simply get across some information to the audience. There are numerous types of essays that our essay writers can assist you with.…
Magnesium Carbonate, MgCO3, is a white solid that occurs naturally as a mineral, as has a variety uses. MgCO3 is used in flooring, fireproofing, fire extinguishing compositions, cosmetics, dusting powder, and even toothpaste. It can also be used as a smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent, and an additive in table salt to keep it free flowing (Magnesium Carbonate).…
Calcium is an extremely important factor for health and longevity. It serves both a structural and physiological role in the entire organism. Bones are constantly breaking down and rebuilding, and calcium is directly involved in this process. Calcium ions (Ca2+) are essential mediators of a wide variety of cellular activities, including the passing of information along neurons and between adjacent neurons. Hormonal regulation is also mediated by the proper functions of calcium and calcium ions in the body.…