VIHS/ Department of Chemistry Chemistry Revision Unit II (Edexcel) (01) a) When lithium nitrate and sodium nitrate are heated separately‚ both decompose giving oxygen gas as one of the products. (i) Which of these two nitrates would decompose at the lower temperature? .........................................................………………………………………….................... (ii) Give the name of any other product formed when sodium nitrate is heated. .....................................................
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excreted through the kidneys. The kidneys filter blood and excrete urine (Smith‚ 2013).
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Section A (Answer ALL questions in this Section.) 1. Rubidium (Rb) and potassium belong to the same group in the Periodic Table. The relative atomic mass of rubidium is larger than that of potassium. (a) Explain whether rubidium is more reactive than potassium. (b) Write a chemical equation for the reaction between rubidium and water. (State symbols should be given.) (c) Suggest how rubidium can be stored safely in the laboratory. (d) Suggest ONE safety precaution for handling
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Chapter 26 Multiple Fxns of Kidneys in Homeostasis 1. Excretion of metabolic waste products and foreign chemicals 2. Regulation of Water and electrolyte balance 3. Regulation of Arterial pressure --long term: excreting variable amounts of sodium and water --short term: secreting vasoactive factors or substances such as rennin 4. Regulation of Acid-Base balance --the only means of eliminating sulfuric acid and phosphoric acid 5. Regulation of Erythrocyte Production
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HAEMATOLOGY 1 MEDS 1084/1083 SHORT REPORT Use of spectrophotometric techniques to determine the optical density or absorbance for the sample with different dilution factors NAME & STUDENT ID: MANMINDER KAUR COURSE: Haematology 1 COORDINATOR: Genia Burchall PRACTICAL DATE: 26th July‚ 2012 DUE DATE: 10th August‚ 2012 ABSTRACT: This experiment aimed at determining the optical density in terms of absorbance of a solution using the different dilution factors to obtain a standard
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Equilibrium In your text (Chang‚ 6th Ed) : Ch. 15 Chemical Equilibrium‚ esp. Section 15.3 Purpose: The Law of Mass Action will be examined via a series of samples using the same reaction‚ but different stating concentrations. The equilibrium constant‚ K‚ for each reaction will be calculated‚ demonstrating that K for a given reaction at a fixed temperature is a constant‚ independent of starting concentrations. Background: For a general reaction aA + bB ↔ cC + dD‚ the Law of Mass Action
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Copyright The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. Hole’s Essentials of Human Anatomy & Physiology David Shier Jackie Butler Ricki Lewis Created by Lu Anne Clark Professor of Science‚ Lansing Community College Chapter 17 Lecture Outlines* *See PowerPoint image slides for all figures and tables pre-inserted into PowerPoint without notes”. 17 -1 Chapter 17 Urinary System 17 -2 CopyrightThe McGraw-Hill Companies‚ Inc. Permission required for reproduction
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transparent‚ because there are no cells to scatter light. Hemolysis (Experiment) Osmotic Pressure The osmotic pressure of a solution depends upon the number of particles dissolved regardless of the size. Therefore‚ more concentrated solutions will have greater osmotic pressure than dilute ones.
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States of Matter Jun Ruan Solid Molecules are tighly packed and harder than liquids and gases. Examples: Ice‚ Coal‚ Salt Amorphous solid-a solid which has a disordered atomic structure. Examples: Glass‚ Rubber Liquids flowing freely but of constant volume. Examples: Water‚ Mercury‚ Alcohol Viscosity-a measure of its resistance to gradual deformation by shear stress or tensile stress. Surface tension-the force that acts on the surface of a liquid and tends to minimize the surface
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Designation: C 114 – 07 Standard Test Methods for Chemical Analysis of Hydraulic Cement1 This standard is issued under the fixed designation C 114; the number immediately following the designation indicates the year of original adoption or‚ in the case of revision‚ the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope* 1.1 These test methods cover
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