Chemical Equilibrium J.R. Chua2 and I.G. Mejarito2 1Department of Mining Engineering‚ College of Mining Metallurgical and Materials Engineering University of the Philippines‚ Diliman‚ Quezon City‚ Philippines 2Department of Molecular Biology & Biotechnology‚ College of Science Date Performed: April 22‚ 2013 Instructor: Julius Victorius A. Saluria Discussion The laws of chemical equilibrium define the direction in which a chemical reaction will proceed‚ as well as the quantities of
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Chloroform is a halogenated organic compound known by its nonsystematic name. The chemical name for chloroform is trichloromethane. The molecular formula of this synthetic chemical is CHCl3. A particular odor‚ considered by some to be pleasant‚ will let one know chloroform is in the room. Because without it‚ the lack of color of this clear liquid makes it difficult to identify. Be fair warned: trichloromethane is volatile. It also sinks in water because it is denser. Chloroform is nonflammable
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Unit 1 – Lesson 1 Chemistry Key Questions 1. Element Standard Notation # Of Electrons # Of Protons # Of Neutrons Sodium 23 11 Na 11 11 12 Chromium 24 Ca 26 26 27 ? Phosphorus 32 P 15 15 16 2. Fireworks; Which metals burn to produce these colours? Red – Lithium (Sr) Blue – Cesium (Cs) Pink – Potassium (K) Yellow/Green – Copper (Cu) Orange – Carbon (Ca) 3. Let’s say that the three bottles contain Fe(NO3)3‚ BaCl‚ and AgNO3. These are Iron (III) Nitrate‚ Barium Chloride
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Name: Lisa Brewer iLab‚ Week # 2 CATIONS AND ANION LAB Introduction The purpose of this week’s lab is to learn to demonstrate a double-replacement reaction of ionic compounds. To accomplish this‚ two ionic compounds will be mixed together and the product will precipitate out of solution. In this procedure‚ the product must be precipitated out of the solution and then weighed. For this lab‚ lead (II) nitrate (Pb(NO3)2) and potassium chromate (K2CrO4) will be reacted together to demonstrate
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1. The Tums tablet is insoluble in water. The water turns foggy when the Tums tablet is added. The particles of the tablet are suspended in the water‚ therefore the water appeared foggy and opaque. The Alka-Seltzer is soluble in water. The ingredients of Alka-Seltzer and the water react together to produce gas‚ thus bubbles formed in the solution. Whereas‚ the Rolaids tablet did not dissolve in water. The powder remained afloat on the surface of the water. Unlike the Tums tablet‚ Rolaids does not
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Chem 1406 Isolation of Casein Report Sheet Name Melanie Black-Van Wright Date 11/10/14 Partner if applicable Part I: Observations of formation of casein precipitate The milk began to curd. As the curd increases the milk appeared more clear at times. Mass of casein 1.65 g Part II: Test tube Observation of CuSO4 biuret Test Test Results (+ or -) Casein Solution turned violet + Egg white solution turned violet + Water solution turned blue - Sugar solution turned blue - Postlab Questions 1.
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Biomagnification speech DESRIPTION OF THE ISSUE Biomagnification is the accumulation of substances‚ especially many chlorinated hydrocarbons that are used as pesticides. Common chlorinated hydrocarbons include DDT‚ dieldrin‚ and PCBs. These chemicals are insoluble in water‚ but highly soluble in organic solvents like animal fats and plant oils. Due to their insolubility‚ they are persistent in the environment and cannot be broken down by any natural processes. HISTORY OF THE PROBLEM DDT was first
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LAB 3.Ø.Ø: do ions combine in definite ratios PURPOSE The purpose of this investigation is to determine whether ions combine in definite ratios or not. To observe‚ and create a table of the different ions. QUESTION If copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios. HYPOTHESIS / PREDICTION I believe that the ions will combine in definite ratios due to the fact that the valance electrons will not be changing throughout any
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Chem 28 Problem Set 1 Date due: August 26‚ Tuesday 10:00 am General Instructions: - Place answers in 1 long ruled pad paper. - Show all necessary calculations and proper conversion of units. Final answers should be in proper significant figures - Box all final answers 1.) In a precipitation reaction‚ 150.0 mL of 0.200 N NaOH was mixed in 50.0 mL aluminum nitrate solution to precipitate all the Al3+. a.) What is the normality of Al(NO3)3? b.) What is the molarity of the solution in 1
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The titration experiments between the three different brands and under the five different conditions showed varied results. As shown in Graph 1‚ the condition which tested most effervescent was when the soda water was under cold temperatures and the least effervescent temperature was when the soda water was warm. When left standing without the lid‚ the soda water proved to be least effervescent. As seen in the above graph‚ under cold temperatures‚ ‘Schweppes’ demonstrated that it was the most effervescent
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