lab. (10 points) Reactants Prediction of Reaction Type Observations Reaction Type Iron (III) and copper (II) sulfate solution single replacement Solids stay concentrated at the bottom Single replacement Lead (II) nitrate and potassium iodide solutions Double replacement Yellow colored powder collected at the bottom Double replacement Magnesium metal and hydrochloric acid solution Single replacement The solution began to fizz. Proves to be flammable. single replacement Electrolysis
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Scandium is the 21st element on the periodic table. This element can be located in the 4th period 3rd . The symbol for Scandium is Sc on the periodic table. Scandium is used for and is in many things. For example it is used to help grow crops such as corn‚ peas‚ and other seed grown plants. There are many protons and neutrons in Scandium. There are 21 protons‚ 24 neutrons‚ and 21 electrons. Scandium is also used in tracking devices. Scandium was discovered in Sweden 1879‚ by Lars Fredrick Nilson
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Chemical Reactions and their Classifications 26 October 2012 Abstract: Ordinary laboratory ware was used to determine how many of what type of chemical reactions occurred. This yielded three decomposition reactions‚ four substitution reactions‚ and three metathesis reactions. Introduction There are many different types of chemical reactions in the study of chemistry; A composition reaction (also known as synthesis) is defined as the reaction that occurs when two single compounds combine in
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PART IX - SPICE AND SALT 106. Prohibition to sell sub-standard spice (1) No person shall import‚ process‚ store‚ expose for sale or sell any spice which does not comply with the standard specified in paragraph (2). (2) (a) Spice shall be the sound leaves‚ flowers‚ buds‚ fruits‚ seeds‚ barks or rhizomes of plants that are suitable for use as condiments for imparting any flavour or aroma to food; (b) Aniseed shall be the dried‚ ripe fruit of the plant
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along with other growth factors they aid in the progression of differentiated astrocytic tumors. The materials and methods gave information that best suited the goal of the paper. Methods consisted of cell cultures‚ retroviral expression‚ propidium iodide FACS analysis‚ H-thymidine incorporation‚ and western blot analysis. The only section not fully understood was the use of the H-thymidine method. The data and graphs set up were helpful to understanding the results. This was observed throughout
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classified as dicots. The image below shows several bean plants. Using the picture above‚ are the leaves of the bean plants consistent with the venation pattern of the leaves of dicots? Yes 2 If you stain a cut corn kernel with a drop of potassium iodide‚ the cotyledon and the endosperm‚ but not the embryo‚ will stain blue-black. What does this indicate the presence of? Starch. Corn has starch in it as a food source for the embryo‚ the embryo on the other hand does not have starch… 3 Why is this
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August 28‚ 2009 [PROBLEM SET FROM R. CHANG TEST BANK] Chapter 16 Acid-Base Equilibria and Solubility Equilibria Student: ___________________________________________________________________________ NOTE: A table of ionization constants and Ka’s is required to work some of the problems in this chapter. 1. In which one of the following solutions will acetic acid have the greatest percent ionization? A. B. C. D. 2. Which one of the following is a buffer solution? A. B. C. D. E. 3. 0.40 M HCN and
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PHARMACEUTICAL CHEMISTRY Chapter 5 – Gastrointestinal Agents • Inorganic agents used to treat gastrointestinal disorders includes: 1. Products for altering gastric pH 2. Protectives for intestinal inflammation 3. Adsorbents for intestinal toxins 4. Cathartics of laxatives for constipation ANTACIDS o neutralize excess hydrochloric acid o inactivate the proteolytic enzyme‚ pepsin o alkaline bases Results of Hyperacidity: o Gastritis – inflammation of the gastric mucosa o Peptic ulcer
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Goals The main goal of this project is to learn how to identify the properties of an unknown ionic compound. In order to do this successfully the group has to use a variety of methods and run several tests on the unknown compound. By doing this the group will be able to identify the different chemical and physical properties of the compound that will help obtain the identity of the specific compound given. The group will devise two syntheses of the compound‚ and compare them for cost effectiveness
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AP Biology Dissolved Oxygen and Aquatic Primary Productivity Purpose: To measure and analyze the primary productivity of natural waters of laboratory cultures using screens to simulate the decrease of light with increasing depth. Background: Dissolved oxygen (DO) is how oxygen is measured. Oxygen is required in cellular respiration‚ so it is very important for aquatic life. When more oxygen is consumed than is produced‚ dissolved oxygen levels decline and some animals could die if they do not
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