performed: October 2 - 3‚ 2012 Gravimetric Analysis of an Unknown Group 1 Metal Carbonate Purpose: The purpose of this lab is to determine the identity of a Group 1 metal carbonate compound by gravimetric analysis. Procedure: The unknown carbonate is weighed and then dissolved in water. A solution of CaCl2 (calcium chloride) is added to the metal carbonate solution to precipitate the carbonate ions as CaCO3 (calcium carbonate). The precipitate is then filtered‚ dried‚ and weighed again. Data: Equation
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developed to "soften" hard water; i.e.‚ remove the calcium and magnesium ions. Water can be softened in a number of ways. An automatic water softener connected to water supply pipes removes magnesium and calcium from water and replaces them with sodium. Sodium does not react with soap or detergents. If you don’t have an automatic water softener‚ you can still soften laundry water by adding softeners directly to the wash water. These softeners combine with calcium and magnesium‚ preventing the minerals from
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Since an acid + carbonate Salt + water + Carbon Dioxide‚ and lime water (Calcium Hydroxide) precipitates to Calcium carbonate when exposed to CO2‚ then if the unknown substance is placed in Hydrochloric acid and the captured gas causes precipitation (precipitation in ionic compounds generally form if the opposite charged
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How Do Hypotonic‚ Hypertonic‚ and Isotonic Solutions Affect the Water Movement of a Cell? Michael Halverson Valhalla High School El Cajon‚ California Research Host: Kim E. Barrett‚ Ph.D. University of California‚ San Diego 1997 Grade Level: High School How Do Hypotonic‚ Hypertonic‚ and Isotonic Solutions Affect the Water Movement of a Cell? Purpose: The purpose of this activity is to teach students about osmosis and the effects of hypotonic‚ hypertonic‚ and isotonic solutions on animal
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Common Name: Pearl Scientific Name: Calcium Carbonate Formula: CaCO3 Fundamental particles: Pearls are comprised of a positive Calcium ion (Ca+) and a negative Carbonate polyatomic ion (CO3+) Usage: Jewelry Properties: Pearls are good jewelry because they are hard and lustrous. Pearls are hard because of the strong Intermolecular forces created between the Calcium and the Carbonate ions. The pearls luster is dependent on the amount of nacre excreted. The Oyster produces nacre when
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Ocean acidification is the continuous reduction of the ocean’s pH‚ carbonate ion concentration‚ and saturation states of biological calcium carbonate minerals. Ocean acidification is caused by the uptake of carbon dioxide from the atmosphere. According to “Ocean Acidification: The Other CO2 Problem‚” after the industrial revolution‚ carbon dioxide levels in the atmosphere has increased nearly 40%‚ primarily due to the burning of fossil fuels and deforestation (Doney S. 2009). The increase of
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Any calcium carbonate as the main component of natural stone ‚ such as dolomite ‚ limestone and other materials are the most Sinovac mill Raymond mill equipment manufacturers and processing can be used to produce lime. Lime widely used in a variety of engineering applications ‚ but also the first application of cementitious materials ‚ in China there are medical uses of lime . Lime has a strong alkaline chemical reactions can generate hydraulic cement ‚ so the building is in very good infrastructure
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Mussels B. Related Studies 1. Characterization of Calcium Carbonate Obtained from Oyster and Mussel Shells and Incorporation in Polypropylene a. calcium carbonate in mussel and oyster shells used in the formulation of medicine‚ in construction or as filler in polymer materials b. calcium carbonate from mussel and oyster shells and used as filler in polypropylene compared their properties with polypropylene and commercial calcium carbonate composites. C. Info Sources III. Methodology
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laboratory work: 10/9/2012 5:00-7:45 Date of report written: 10/15/2012 Introduction: The purpose is to isolate caffeine from coffee by using the organic solvent dichloromethane (CH2Cl2) that is also referred to as direct contact. Calcium carbonate (CaCO3) is used to remove the tannins from the coffee. Afterwards an extraction is used to separate the organic layer (bottom) from the aqueous layer (upper). By using a rotary evaporator‚ it evaporates the organic solvent and forms the crude
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RESOURCES Why farmers sometimes need to change the pH of soil A healthy‚ productive farm is created from the ground up. The fertility‚ structure and biological activity of your soil are the keys to raising successful crops. Great soil grows great plants with increased vigour and pest tolerance‚ not to mention maximized yields. There’s a lot to know about your soil for sure‚ but the most critical measurement is its pH. What is pH? Represented on a scale of 0 to 14‚ pH is the measurement of the
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