INORGANIC CHEMISTRY – CLASS XI (ISC) Properties of Group 1 elements [Alkali metals] 1. Due to high reactivity‚ alkali metals do not occur free in nature. Elements of group 1 (or IA) are known as alkali metals because their hydroxides are soluble in water and form strongly alkaline solutions. Alkali metals are stored under kerosene oil because they get tarnished on exposure to air. 2. The general electron configuration of alkali metals is ns1. 3. Alkali metals have largest size and lowest
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Atmosphere –Water Interactions C. P. Huang Stumm W. and J. J. Morgan. Chapter 5. Aquatic Chemistry 1 Environmental Systems 2 5.2 Atmospheric generation of acidity 3 Genesis of acid rain 4 Chemical processes and Chemical Composition of Water Droplets 5 uM ueq/L NO360 60 SO4244 88 Cl 25 25 S(X) 173 Mg2+ 4.5 9 Ca2+ 16 32 NH4+ 85 85 K+ 2 2 Na + 5 5 H+ 50 50 S(M) 183 CH3COOH 5 5 6 7 8 Total Annual
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Amoxicillin Amoxicillin is a penicillin antibiotic. It fights bacteria in your body. Amoxicillin is used to treat many different types of infections caused by bacteria‚ such as ear infections‚ bladder infections‚ pneumonia‚ gonorrhea‚ and E. coli or salmonella infection. Amoxicillin is also sometimes used together with another antibiotic called clarithromycin (Biaxin) to treat stomach ulcers caused by Helicobacter pylori infection. This combination is sometimes used with a stomach acid reducer
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Chemistry Revision F331 Isotopes - atoms with the same atomic number‚ but different mass numbers 131I - radioactive tracer for thyroid. 99Tc for tumours. Radioisotopes - gamma emitters & short half life - long enough to detect‚ but not long enough for damage. Beta particles emitters are more useful than alpha particle emitters because they penetrate more and so are more easily detected. Also‚ less damaging. The half life is the time taken for half the isotope to decay Mass left = initial
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Bibliography: Heyworth‚ Rex M Dr‚ and J G R Briggs. Chemistry Insights. Singapore: Pearson Education South East Asia‚ 2007 http://www.google.com http://www.ausetute.com.au/elecysis.html http://www.nmsea.org/Curriculhttp://www.nmsea.org/Curriculum/7_12/electrolysis/electrolysis.htmum/7_12/electrolysis/electrolysis
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Chemistry 101 Chapter 4 Practice Test February 2013 1. A 20.0-g sample of HF is dissolved in water to give 2.0 102 mL of solution. The concentration of the solution is: a) 1.0 M b) 3.0 M c) 0.10 M d) 5.0 M e) 10.0 M Ans: d) 5.0 M Page: 4.3 2. Which of the following aqueous solutions contains the greatest number of ions? a) 400.0 mL of 0.10 M NaCl b) 300.0 mL of 0.10 M CaCl2 c) 200.0 mL of 0.10 M FeCl3 d) 200.0 mL of 0.10 M KBr e) 800.0 mL of 0.10 M sucrose ANS:
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etc do not form precipitates. In addition the NH4 cation does not form a ... 3 questions on cations and anions? 2 answers Nov 23‚ 2011 AP Chemistry Problems? 1 answer Sep 9‚ 2011 What anions form precipitates? 2 answers Jun 25‚ 2010 What cations commonly form precipitates? 1 answer Oct 13‚ 2008 More results from answers.yahoo.com [DOC]Solubility Rules Lab 2 C12-1-02 umanitoba.ca/.../Solubility%20Rules%20Lab%20... University of Manitoba What do stalagmites and stalactites found in caverns have
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Factors Affecting Rates of Reaction Thanks to Michelle Craig Manitoba Curriculum Chemistry Grade 12; Kinetics‚ Topic 3-08 Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature‚ concentration‚ catalyst‚ and surface area. Apparatus and Materials Available 3 x 250 mL beakers magnesium ribbon (1 cm) 3 x test tubes magnesium powder test tube rack mossy zinc 10 mL graduated
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Food Chemistry: Option F Food Groups: F.1 Food & Nutrients Food: any substance‚ whether processed‚ semi-processed or raw‚ which is intended for human consumption‚ and includes drinks‚ chewing gum and any substance which has been used in the manufacture‚ preparation or treatment of “food” but does not include cosmetics or tobacco or substances used only as drugs. Nutrients: any substance obtained from food and used by the body to provide energy‚ to regulate growth‚ and to maintain and repair
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IGCSE COURSEWORK - CHEMISTRY Name:Alessia Rovegno Class: S3scA Teacher: Mr tinwin Date:1-3-13 Experiment number: Ch 3 Title: Which is the Best Fuel? Mark awarded: C1 Coursework checklist (Following instructions) | Needed for | Student | Teacher | Comments | Follows written‚ diagrammatic or oral instructions to perform a single practical operation –measures water vol | 2 | | | | Use familiar apparatus and materials adequately and safely – safety glasses | 4 | | | |
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