starts to dissolve and lets out the carbon dioxide gas. This is what makes the bubbles.Usually the tablet is used as a pain reliever and an antacid.the pain reliever is used in baking soda‚sodium bicarbonate.The pain reliever also includes sodium hydrogen carbonate
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CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced
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In this lab‚ theoretical chemical equations of ionic compounds were balanced by the group to determine ratios of reactants and products. The products were determined by the group through switching the cation with their anion partner. Using this information‚ it was determined by the group‚ whether the reaction should result in a solid‚ gas‚ or water based on theoretical solubility. Then several experiments testing the reaction of these ionic compounds were performed by the partners. Two ionic compounds
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Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:
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Decreasing Fossil Fuels Over the past century America has continuously used its own fossil fuel resources and paid handsomely for additional supplies‚ in the race to stay current with modern technology and life .The possession of this resource has made the United States a very prosperous and powerful nation. The same fossil fuels that’s has made America such a powerhouse are the same that are damaging the environment and economy they have enabled. It is imperative that we decrease our dependency
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Chemistry * a science that dealing with the structure‚ composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal combustion
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Conservation of Mass Lab Author: Aubrey Bryant Team Members: Elianna Chavez‚ Berkley BresemannDate of Experiment: Date Report Submitted: September 30‚ 2014 Instructor: Josh GeisingerClass: Chemistry Purpose: The purpose of this experiment was to use the Law of Conservation of Mass and the Law of Definite Proportions to determine the quantity of zinc chloride that is produced in a chemical change from a given amount of zinc. Background: We used two important laws of chemistry in this lab
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reacts with the hydroxide molecules to form two negative charges‚ or dianion. The dianion then reacts with oxygen to form a 5-aminophtalic acid and nitrogen gas. After‚ the oxygen forms with the hydrogen peroxide and the
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seconds top dissolved 2) Benzophenone is a nonpolar molecule and is soluble in nonpolar solvents‚ such as hexane. It does not have potential for hydrogen bonding‚ which is why it is insoluble
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From the table‚ the result of dehydration of secondary alcohol is expected‚ and it undergoes E1 elimination. As supposed in the theory and mechanism‚ because elimination can occur both sides of secondary carbocation‚ so there are three products: 1-butene‚ trans-2-butene and cis-2-butene with three peaks. The main product is trans-2-butene‚ because it is the most stable compound. However‚ the result of dehydration of primary alcohol is not expected. It is supposed to form only one product‚ 1-butene
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