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CHEMISTRY INVESTIGATION ‘HOW DOES CONCENTRATION AFFECT THE RATE OF REACTION?’ SANIA HUSSAIN CANDIDATE NUMBER:5093 Contents The aim – PG 1 Introduction – PG 1 Theories – PG 1‚ 2 Prediction – PG 2‚ 3 Safety – PG 3 Strategy – PG 3‚ 4 Method – PG 5‚ 6‚ 7 Preliminary – PG 7 Actual experiment and graphs – PG 7+ Chemistry coursework Hypothesis/Aims The aim of the investigation is to see how different concentrations of hydrochloric acid affects the rate at which hydrogen
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DISCUSSION NO. 3 THE PERIODIC TABLE OF ELEMENTS Members: Salvador‚ Kim Kristal G. Sanchez‚ Jhoana Marie V. Santeco‚ Francesca Anya C. Sy‚ Shane Francheska Lei Dayanne S. Ureta‚ Nheimelyn E. INUR-7 GROUP 10 HISTORY OF THE PERIODIC TABLE The discoveries of elements stole a long period of time. As a matter of fact‚ several elements were mentioned in Biblical accounts and Koran. However‚ it was in the 19th century where they get to discover a lot of element. And as the number of
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Chem 3650 Organic II Lab Lecture Summer 2013 Instructor: Victoria Dougherty M.S. Victoria Dougherty M.S. Office: BSE 1.340 Phone: 458-5473 (I do not have voicemail) Office Hours: Tuesday and Thursday: noon – 1:00 pm (or by appointment) Monday and Wednesday: 1:00 pm to 2:00 pm E-mail: victoria.dougherty@utsa.edu (put Chem 3650 in subject) Lab instructors and sections: Lab instructors Email (put Chem 3652 in subject) Section(s) Times Marilyn Wooten PhD. marilyn.wooten@gmail.com 01T 7:30–11:20
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Concentration Dependence of Reaction Rates Introduction: The purpose of this experiment was to determine the differential rate law for a chemical reaction based on the relationship between the concentration of reactants and the rate of reaction. Since spectrophotometers‚ like Spec-20s‚ provide information about concentration‚ these instruments were used to monitor the increase or decrease in concentration of a reactant in a solution over time. By plotting [phph2-] versus time and changing the concentration
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Heat of Combustion of Magnesium Background: The students were given full instructions on how to experimentally determine the enthalpy of reaction (ΔHrxn) for the combustion of magnesium ribbon‚ using Hess’s Law. Data Collection: | |Reaction 1 |Reaction 2 | | |(MgO) |(Mg)
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The hypothesis for this lab was that Core B will be the least flexible due to a loss in water. Unfortunately‚ my results led my hypothesis to be incorrect. The results that were received was that Core C was the most flexible‚ Core B was somewhat flexible‚ and Core A was not flexible and stiff. Core A was the most non-adjustable due to it being hypertonic which means that the total concentration of all the dissolved solute particles is greater than the other solution. Core B was isotonic meaning
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AP II LAB 9 RENAL URINALYSIS LAB 70 POINTS Lab Partners Esma‚ Frankie‚ Alexis‚ Justin Name __Jenna Downing_______ Results Table 45 pts. Unknown Samples Specific Gravity Urine Ph Color Turbidity Protein Sugar Hemoglobin Myoglobin Case Study # A 1.0188 6 yellow Clear 10 250 No blood B 1.01728 7 Yellow/green Cloudy No protein 100 No blood C 1.01490 6 Orange/red Cloudy 30 100 No blood D 1.01331 6 green cloudy 30 100 No
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Qihui Qian Prof. Hernandez English 350/355 31 October 2014 An unforgettable Day The most unforgettable day in my life is the day I went to America. When this day came‚ I knew how much my parents loved me‚ I became independent‚ and became hard working so that I can achieve my dreams. So I know I will never forget that day since it was a very unforgettable day for me. Here are the reasons why I left China. When I was in high school‚ my father suggested that I study in America. After my father told
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AP Bio Lab Report Osmosis and Diffusion Introduction When a substance is released into an area‚ the random movement of its molecules results in a multitude of collisions. These collisions‚ in turn‚ lead to a dispersion of the molecules. The overall movement of the molecules will be from an area of high concentration‚ where there will be more collisions‚ to areas of low concentration‚ where the number of collisions will be much less. This process of dispersion will continue until there is no
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