Carbonate Essays

1. Structure of drug calcium carbonate , commonly known as limestone , limestone , stone powder which have : Molecular formula: CaCO3 Molecular Weight: 100.09 2. Physical properties White solid, odorless, odorless. There are two forms of amorphous and crystalline. Crystalline type can be divided into orthorhombic and hexagonal crystals, columnar or diamond. The relative density is 2.71 to 825-896.6°C, and it decomposes into calcium oxide and carbon dioxide at about 825°C. Melting point 1339°C, melting

Sodium carbonate Overflowed in the molds making it difficult to get out of molds Muffin top Little moist in bottom and middle of molds Very dry on top Some bubbles were made when placed into the water bath Bubbles could be heard popping when in water Took a little bit to disintegrate There were holes when hardening from bubbles Trial 2 crumbled to pieces Trial 4 and 5 were still wet and crumbled and the top came off on Trial 5 An exothermic reaction occurred therefore the water bath became

1.5.1. Calcium carbonate Calcium carbonate is one of the most abundant calcium salts present in the earth's crust. Calcium is an alkaline earth metal with the atomic number 20, chemical formula Ca2+, represents about a third of the metals abundant in the earth and is essential for the life of living organisms. In fact, it is the essential component of a balanced diet, as well as the formation of bones and teeth and oversees important physiological functions (37). Because of its chemical reactivity

EDTA will then react with any calcium metals ions present. Calcium carbonate was used to standardize the EDTA solution. During the standardization titration, there were two attempts made at dissolving the calcium carbonate. On the first attempt, sodium hydroxide was added along with the magnesium but would not dissolve completely. On the second attempt, an extra 5 mL of sodium hydroxide was added to help dissolve the calcium carbonate. After the solids dissolved over a heated stove, the magnesium was

This experiment is carried out to determine the percentage of calcium carbonate, CaCO3 in the toothpaste provided with the experimental technique known as back titration. A back titration is also known as indirect titration. A known mass of toothpaste is neutralised with a known concentration and volume of hydrochloric acid, HCl. The mixture is then further neutralised by a known concentration and volume of sodium hydroxide solution, NaOH to determine the number of mole of HCl that reacted with CaCO3

SURFACE AREA OF CALCIUM CARBONATE UPON RATE OF REACTION Calcium Carbonate Chips 1 Introduction: Within the current investigation, the effects of the surface area of Calcium Carbonate (CaCO3) in combination with Hydrochloric acid (HCl) upon its rate of reaction. CaCO3, commonly referred to as limestone, is an organic substance and is, in a sense, the crystallised “carbonic salt” of the element, calcium2. In addition to being a salt, the pH level of Calcium Carbonate is 9.91, and it is therefore

The Comparison of the Oriskany Sandstone and the Navajo Sandstone By Mekhali Peyyalamitta The Oriskany sandstone, is a sandstone that can be found in parts of West Virginia and Ohio. It has a white to brown color and has coarse to fine grains. It is siliceous, and fossiliferous. The Navajo sandstone is a sandstone that has a light pink color, and is also fine grained. It can be found in most parts of Utah. Can sandstones from opposite ends of the country, be similar? These two sandstones will be

Synopsis This experiment is the determination of Calcium Carbonate (CaCO3) content in toothpaste with the use of back titration while demonstrating quantitative transfer of solids and liquids. A accurately weighed quantity of toothpaste was dissolved in excess volumes of HCl. This solution is then titrated with NaOH to find the volume of the excess HCl. The volume of HCl reacted, which is found by substracting the volume of given HCl with the volume of excess HCl reacted, can be further manipulated

Marble is also a tough material, although not as tough as granite. Marble can also scratch and stain easily, and also be prey to acids and corrosive substances. What you need to do is to always keep marble surfaces dry, and keep acids and other staining substances from being in contact with marble for too long. Once you do those steps, you can ensure the fine and pristine surface of your marble countertops.   So, these are some simple maintenance tips for your marble and granite surfaces. By

The Citric Acid Cycle/ Kerbs Cycle/ TCA The Citric acid cycle is important as anaerobic glycolysis can only harvest a fraction of the energy from glucose. In the citric acid cycle there is aerobic respiration of pyruvate from step ten in glycolysis to C02 and H2O. This oxidation of pyruvate can greater a higher yield of ATP. The citric acid cycle occurs in the mitochondria where ten ATP is produced. The main purpose of the citric acid cycle is to harvest electrons from the citric acid cycle and

Purpose What can best stop an egg from breaking while remaining as light as possible? Background Due to us recently learning about impulse and how bouncing doubles the momentum experienced by an object. Also, an impulse is the force multiplied by the time that it is applied so the longer the time, the less force in a given impulse. Materials Egg Container - (Lunchbox) Popcorn - Large bag 4 sandwich Ziploc bags Extra cushioning device(s) - (a literal ‘handful’ of underwear) Piece of paper* Pencil*

What is Kidney Stone?   The stone can be formed from a variety of substances, but the most common stone is made of calcium and oxalate crystallized in the urinary tract. Other types of stones include struvite, uric acid, and cystine. Although the stones themselves are painful, they may lead to more severe conditions, such as obstruction of the urethra, permanent damage to the kidney, and even life-threatening infections. I see the patient in the hospital because of the stone block into the necrotic

The hardness of water reflects the nature of the geological formation with which it has been in contact. The major portion of total hardness is caused by calcium and magnesium ions and plays role in heart disease in human. The TH of the groundwater was calculated using the formula as given below (Sawyer and McCartly 1967). (1) Table 3: Groundwater classification based on total hardness (Sawyer and Mc Cartly 1967) Total Hardness as CaCO3 (mg/l) Classification Percentage of samples < 75 Soft

1) Explain how and why human interaction has caused the environmental change to the chose environment in both countries? Coral reefs are an environment to a vast range of different species. 25% of all global reefs have been destroyed by humans. 60% percent of coral reefs are under threat by humans. The Great Barrier Reef is one of the largest reefs located in Queensland Australia, it is hugely impacted by humans. Pollution, tourism, and mining have all had a huge negative impact on the reef. Coral

The original use for obsidian, or volcanic glass, was for making chipped stone tools. Archaeologists soon found an incredible use for the tool that has helped us further our knowledge of the past. Obsidian hydration dating was first introduced to the archaeological community by the two geologists, Irving Friedman and Robert Smith, in 1960 (Hughes, 1993). The two ways this method can be used are relative dating and absolute dating. The relative dating method allows you to determine whether an artifact

respect to hydrochloric acid (HCl), what is the order of reaction in the reaction between HCl and calcium carbonate (CaCO3) determined by changing the concentration of HCl and measuring the volume of carbon dioxide gas (CO2) collected in 30 seconds whilst keeping the mass of the powdered CaCO3 constant and the temperature of the reaction system at 25oC? BACKGROUND INFORMATION Calcium carbonate (CaCO3) is a chemical compound that is commonly found in rocks such as chalk, limestone, marble and travertine

Procedure Potassium carbonate (1.108 g, 8.017 mmol) was added to trimethylphosphonoacetate (1.4 mL, 8.688 mmol) and p-methoxybenzaldehyde (365 µL, 3.001 mmol) in a 10 mL flask. The solution was then heated and stirred at 170 degrees Celsius and 1100 RPM until reflux occurred. After being heated under reflux for 12 minutes, the solution was allowed to cool for 10 minutes before being transferred to another flask using 11 mL of water. The crude, flaky product was isolated via suction filtration and

the amounts of substances that are involved in reactions. For this experiment kinetics is a huge part of it. Kinetics is explained as the reaction speed and or rate of reaction. To observe these reactions made by having reactants, sodium hydrogen carbonate, NaHCO3 known as baking soda and acetic acid, CH3COOH that is vinegar being mixed together. The products were carbon dioxide, water, and sodium acetate. Because this reaction will be based on its speed according to the difference in temperature,

to determine how variations in the amounts of calcium carbonate would affect the amount of carbon dioxide produced within the time frame of one minute. By measuring the amount of carbon dioxide produced, the changes in the rate of reaction could also be determined. By the end of the minute, the more carbon dioxide was produced, the faster the rate of reaction. Throughout the minute, the flask containing hydrochloric acid and calcium carbonate was swirled around in continuous, circular motions. At

Reaction rate of sodium hydrogen carbonate Introduction Aim My aim of this investigation is to determine the reaction rate of sodium hydrogen carbonate and to gain a greater understanding of the chemical and its function. The significance of this lab is mainly personal since I love baking and am curious about the chemistry of the process. However, it is also important to know how much sodium bicarbonate could be used if I were to construct my own recipe, to receive a wishful result. Research Question