Problem What effect does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein? Introduction Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient‚ which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher
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The Effect of Temperature on the Rate of the Reaction Between Calcium Carbonate and 1.0 M Hydrochloric Acid Josue Montoya IB Chemistry SL Mr. Pham Due Date: 07 March 2013 Dates Experiment Was Conducted: 27‚ 28‚ 29 February 2013 INTRODUCTION Research Question: How does altering the temperature at which calcium carbonate and 1.0 M hydrochloric acid react‚ affect the rate of reaction? Aim: The purpose of the experiment is to demonstrate
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Chemical Formulas Review: Nomenclature and Formula Writing Naming Simple Compounds There are four naming systems you should familiarize yourself with to succeed on the SAT II Chemistry exam. The trick is recognizing which naming system to use. Here are the guidelines: * If the compound starts with H‚ it is an acid. Use the naming acids rules. * If the compound starts with C and contains quite a few H’s and perhaps some O’s‚ it is organic. Use the naming organic compounds rules. *
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Class 10th Science Syllabus COURSE STRUCTURE CLASS X First Term: Marks: 90 Units Marks I. Chemical Substances: 33 II. World of living : 21 III. Effects of Current : 29 IV Natural Resources : 07 Total :90 Theme: Materials (30 Periods) Unit: Chemical Substances - Nature and Behavior Chemical reactions: Chemical Equation‚ Balanced chemical equation‚ implications of a balanced chemical equation‚ types of chemical reactions: Combinations‚ decomposition
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CBSE Sample Paper-05 (Unsolved) SUMMATIVE ASSESSMENT –I SCIENCE (Theory) Class – X Time allowed: 3 hours Maximum Marks: 90 General Instructions: a) All questions are compulsory. b) The question paper comprises of two sections‚ A and B. You are to attempt both the sections. c) Questions 1 to 3 in section A are one mark questions. These are to be answered in one word or in one sentence. d) Questions 4 to 6 in section A are two marks questions. These are to be answered in about 30 words
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the practical that we completed was to determine the molar mass of carbon dioxide (CO2) by experimental means and to observe the reaction of hydrochloric acid and sodium carbonate. Using the balanced equation: Na2CO3 + 2HCl → 2NaCl + H2O + CO2 Materials / Apparatus: 1) 8.00g of sodium carbonate‚ 2) 30mL of hydrochloric acid (6molL-1) 3) 100mL of hydrochloric acid (6molL-1) 4) 100mL conical flask‚ 5) 150mL glass beaker 6) 50mL glass beaker 7) Glass funnel‚ 8) Digital scales‚ 9) Metal spatula and
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the percent copper and zinc in pennies based on density measurements. 7. Record laboratory data and observations. MATERIALS: Erlenmeyer Flasks o 125 mL o 250 mL beakers o 100 mL graduated cylinders o 10 mL o 25mL Burette o 50 mL Volumetric pipettes o 10 mL Measuring pipet o 10 mL Burette clamp and stand Various liquids and solids for density determination measurements o Liquids Distilled water Heptane Carbon Tetrachloride o Solids Pennies Copper Zinc Lead Aluminum BACKGROUND:
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four times. 7. 3M of hydrochloric acid was diluted into 30 mL of the following concentrations: 2.0M‚ 1.5M‚ 1.0 M and 0.5 M. This
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NST Exam 2 Study Guide! I. Proteins Function of body protein: antibodies in the immune system‚ muscle contraction and movement‚ enzymes that facilitate biochemical reactions (catalysts)‚ hormones that regulate bodily activities‚ structural proteins that provide support‚ such as with keratin and collagen‚ found in connective tissues‚ storage proteins store amino acids‚ transport proteins carry molecules/nutrients from one place to another (i.e. hemoglobin). Also contributes to acid base balance
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tested and neutralized with the Hydrochloric acid‚ then the one that would be the most effective antacid would be the TUM’s Ultra Strength Calcium because it is larger and because it is Ultra Strength‚ it should be more effective. Materials • Compliment Extra Strength Antacid Tablet • TUMS • Life Ultra Strength Calcium Antacid Tablet • Goggles • Thymol Blue • Mortar and Pestle • Beakers • pH probe • Clamp • Retort Stand • Pipette-Graduated • Hydrochloric Acid(HCl) • Distilled Water
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