Introduction Whether it be the 4th of July‚ a day at Disneyland‚ or Chinese New Year‚ fireworks can be used to appeal to people of all ages‚ genders‚ and races. These low explosive pyrotechnic devices are primarily used for aesthetic or entertainment purposes. Fireworks come in various forms‚ including sparklers‚ firecrackers‚ basic fireworks‚ and ariel or display fireworks. Those who watch firework displays find that those can be broken into smaller categories by four primary effects. These effects
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absorbance of light. Fructose is the sugar found in fruit. It is a monosaccaride‚ and is a reducing sugar because it acts as a reductant in chemical reactions. This can be seen in the Benedict’s test where the fructose in the fruit juice will reduce CuSO4 to CuO when heated. Cu 2+ → Cu + The following table indicates approximate nutritional values for each of the three fruits to be tested: Energy / kJ Water / % Sugar / mg* Sugar Concentration / mg cm3 -1 Red Grapefruit 128 90 66 0.73
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Chemistry Review (mid-term) 1. Use the equation for atomic mass to answer the following questions. (http://johnheilchem10.escuelacampoalegre.wikispaces.net/file/view/average+atomic+mass+calculations+-+3.pdf) 1. Argon has three naturally occurring isotopes: argon-36‚ argon-38‚ and argon-40. Based on argon’sreported atomic mass‚ which isotope do you think is the most abundant in nature? Explain. 2. Copper is made of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu.
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GROUP No.: | DATE: 02/14/13 | | NAME: | | EXPERIMENT No.25BACILLUS: Diagnostic Tests | | ASCOLI’S THERMOPRECIPITIN TEST Purpose: used to identify anthrax bacilli in animal hides and meat. Principle: This test was designed to detect B. anthracis antigens in the tissues of animals being utilized in animal by-products and thereby to reveal when these products contained ingredients originating from animals that had died of anthrax. The thermostable antigens involved are common to other
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Determination of an Electrochemical Series In electrochemistry‚ a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g.‚ Cu metal in a solution
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GAS LAWS Properties of Gases Gases expand into any available volume • gas molecules escape from open containers. Gases are completely miscible • once mixed they will not spontaneously separate. Gases are described in terms of T‚ P‚ V and n Volume‚ Amount and Temperature • A gas expands uniformly to fill the container in which it is placed – The volume of the container is the volume of the gas – Volume may be in liters‚ mL‚ or cm3 • The temperature of a gas must be indicated
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patel (rmp932) – Post-Lab 5 Acid/Base Titration – lyon – (51730) This print-out should have 25 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Answer the question to at least six significant figures. A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP‚ formula weight 204.2 g/mol). From the following data‚ calculate the molarity of the NaOH solution: mass of KHP 1.404 g; buret reading
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The fair restrain 1 mg/L of NAA along with 0.1 mg/L kinetin called EMMS1 medium showed results expect towards callus differentiation. The most important range in the field of plant muscle educate with proven practical applications is the sprout gift educate technique. Similarly if we simile 0.1+0.5 T & G medium with 0.1+0.1 T & G medium‚ it is observed that only by varying the concentration of phytohormones‚ they trifle some roles in somatic embryogenesis. inacanum becomes lush immature‚ hard‚ crumble
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3.13 Test for Saponin glycosides 2g of dried plant powder add 5ml of distill water shake vigorously. Persistent of foam indicate the presence of saponin glycosides. 3.14 Test for Steroids (Salkowski’s test) 5ml of test solution add with 2ml of Chloroform and then Conc. H2SO4 sides of the test tubes. The appearance of color at the interface indicates the presence of steroids. 3.15 Experimental Procedure for preliminary Phytochemical studies (Brindha et al.‚ 1981) S. No Name of the Test
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Name: Jocelyne Munguia|Date: 6/12/13| Exp 1: Observations of Chemical Changes|Lab Section: 75426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|A2|Tiny bubbles formed around the edges. Under white paper it looked transparent‚ but under black paper there was some white in the middle. | B.|HCl + BTB|A3|The mixture turned yellow instantly. Under white paper the mixture was more of mustard yellow and under black paper it was less of a bright yellow. | C
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