abide by the term and regulations. (c) Argentina’s‚ Chilli’s‚ and United Kingdom’s claims are all in the same area and are about the same size. Key Ag - Silver Au - Gold Co - Cobalt Cu - copper Cr - Chromium Fe - Iron Mb - Molybdenum Mn - Manganese Ni - Nickel Pb - Lead Ti - Titanium U - Uranium Zn - Zinc (d)The ban on mineral exploitation states that mining in Antarctica
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(FOR XII PASSED/APPEARED STUDENTS) ENTRANCE TEST LEADER COURSE TARGET : JEE 2014 (ACADEMIC SESSION 2013-14) SAMPLE QUESTIONS FOR ENTRANCE TEST JEE NOTE : For each question‚ you will be awarded 4 marks if you darken the bubble corresponding to the correct answer ONLY and zero marks if no bubbles are darkened. In all other cases‚ minus one (–1) mark will be awarded in this paper. Out of the four options in each question only one option is correct. 1. Between which two junctions a battery
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Determination of Cations and Anions Instructor’s Guide Master Materials List (complete for 24 students working in pairs) Silver nitrate‚ AgNO3‚ 0.2 M‚ 100 mL* Silver nitrate‚ AgNO3‚ 0.1 M‚ 100 mL* Cupric nitrate‚ Cu(No3)2‚ .02 M‚ 100 mL* Zinc nitrate‚ Zn(NO3)2‚ 0.2 M‚ 100 mL* Ferric nitrate‚ Zn(NO3)2‚ 0.2 M‚ 100 mL* Hydrochloric acid‚ HCl‚ 6 M‚ 125 mL* Nitric acid‚ HNO3‚ 6 M‚ 125 mL* Ammonia‚ NH3‚ 6 M‚ 125 mL* Sulfuric acid‚ H2SO4‚ 6 M‚ 125 mL* Acetic acid‚ CH3COOH‚ 6 M‚ 125 mL* Sodium chloride
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So‚ Pei and co-workers (Pei et al.‚ 2009) found that Cu increases CIP sorption on mineral components kaolinite and montmorillonite in a certain pH range‚ but Ross and Riley (Ross and Riley‚ 1992) showed that Cu increases the mobility and solubility of fluoroquinolones (Chen et al.‚ 2013). Although sediments 5 and 6 have the highest concentration of certain affordable microelements (Cu‚ Fe‚ Zn and Mn) show the lowest sorption potential to CIP‚ this contribution to sorption
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UNIVERSITY OF PRETORIA UNIVERSITEIT VAN PRETORIA ` DEPARTEMENT OF CHEMISTRY DEPARTMENT CHEMIE DATE / DATUM: TIME / TYD: MARKS / PUNTE: 2008.05.30 120 min 80 Outeursreg voorbehou Fakulteit Natuur- en Landbouwetenskappe CHM 171 EXAMINATION / EKSAMEN Internal Examiners / Interne Eksaminatore: External Examiner / Eksterne Eksaminator: Surname and Initials Van en Voorletters Signature Handtekening Dr FR Vogel Dr RJ Bowen Dr EMM Venter Prof WJ Schoeman Student number Studentenommer Marks
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Introduction The objective of this experiment is to identify if the 12 provided solutions contain starch‚ glycogen‚ reducing sugars or proteins. The four major biological macromolecules are carbohydrates‚ lipids‚ proteins and nucleic acids. Abundant elements in the world such as carbon and nitrogen bond in different ways to form many different molecules. The functional groups are what determine their characteristics. During the experiment‚ there will be 3 test. The iodine test is completed to
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Electrolysis Electrolysis is the process by which ionic substances are broken down into simpler substances using electricity. During electrolysis‚ metals and gases may form at the electrodes. What is electrolysis? Ionic substances contain charged particles called ions. For example‚ lead bromide contains positively charged lead ions and negatively charged bromide ions. Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric
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The aim of this experiment was to learn how to determine the cell potential in a voltaic cell. We also will learn about the concentration and temperature effect on the cell potential Materials Cu2+ | Cu | Fe2+ | Fe3+ | Graphite | Br2(l) | Br | C | Cl2 | Cl- | I2(s) | I- | Zn2+ | Zn(s) | DI water | Digital multimeter | Graduated Cylinder | Beakers | Cable clips | Glass crucible | Wash bottle | Safety goggles | Lab coat | | Discussion In Part A all of the seven cells were
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sulphate (ZnSO4) solution which will be prepared by dissolving ZnSO4 in distilled water. The materials that will be used in the following experiment include: • Sixteen volumetric flasks • Zinc sulphate (ZnSO4) solution • Axe deodorant solution • Nivea deodorant solution • Citymen deodorant solution • Ethylenediaminetetraacetic acid (EDTA)
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Ionic bonding is known as a type of chemical bond where the valence electrons are lost from one atom and gained by another. This exchange results in a more from one atom and gained by another. When an atom gains or loses electrons while being bonded with another atom an ion is formed. This bond causes an atom to become either a positive or negative ion. Electrons have a negative charge‚ meaning that if an atom loses an electron‚ the amount of protons are greater than electrons. This makes the atom
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