of the following compounds: a. H2CO3 H: +1‚ O: -2‚ C: +4 b. N2 N: 0 c. Zn(OH)42- Zn: 2+‚ H: +1‚ O: -2 d. NO2- N: +3‚ O: -2 e. LiH Li: +1‚ H: -1 f. Fe3O4 Fe: +8/3‚ O: -2 Identify the species being oxidized and reduced in each of the following reactions: a. 2 Cr+ + Sn4+ Cr3+ + Sn2+ Cr+: oxidized‚ Sn4+: reduced b. 3 Hg2+ + 2 Fe (s) 3 Hg2 + 2 Fe3+ Hg2+: reduced‚ Fe: oxidized c. 2 As (s) + 3 Cl2 (g) 2 AsCl3 As: oxidized‚ Cl2: reduced Would you use
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(CH3)2CH2? 1) _______ A) 8 B) 6 C) 9 D) 5 2) Which has the highest percent mass of Cl? 2) _______ A) C2Cl6 B) CCl4 C) C2Cl4 D) C2Cl2 3) The correct formula for Sodium Nitride is: 3) _______ A) Na3N B) NaNO2 C) NaNO3 D) Na2NO3 4) How many moles of NO3 are there in 6.2g? 4) _______ A) 0.05 B) 10 C) 0.10 D) 384 5) Consider the following equation: 4NH4 + 5O2 → 4 NO + 6H2O How many moles of water are produced when 2 moles of NH4 react with excess Oxygen gas?
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weight can be calculated from the following equation: B. ALCOHOLS 1. Ceric Nitrate – A qualitative test for alcohols and phenols. a. For Water-Soluble Compounds Add 0.5 mL of the ceric nitrate reagent to 2-3 mL of distilled water in a test tube‚ and mix thoroughly. Add 1 to 2 drops of the compound to be tested‚ shake‚ and note the color. If the
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The mechanism of thiazole-2-imine formation has not been well understood leading to the proposal of incorrect structures for the products obtained by the reaction of thiourea analogs with αhaloketones by two independent research groups (1). Based on the principle of hard–soft reactivity‚ i.e. hard nucleophile attacks on hard electrophile and the soft nucleophile on soft electrophile‚ we have suggested an alternative reaction mechanism for the formation of thiazole-2-imine. Our mechanism is supported
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as shown below. y = −x − 3 y 2 y=x+1 1 −3 −2 −1 x O −1 −2 (c) lim f (x) = 2 x → -3- lim f (x) = -2 x → -3+ (d) lim f (x) does not exist because lim f (x) ≠ lim f (x). x → -3 2 (a) lim h(x) = 2 x → -1 -1 + p = 2 p=3 x → -3 x → -3+ x = -1 is in the range -3 ≤ x < 0‚ so the part of the function x + p is used. © Oxford Fajar Sdn. Bhd. (008974-T) 2012 Chap-07-FWS.indd 1 10/18/2012 9:48:51 AM 2 ACE AHEAD Mathematics (T) Second
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Draw: cis-4-tert-butylcyclohexanol ANS: 2. Draw: 3-methyl-2-buten-1-ol ANS: 3. Draw: 2-phenyl-2-propanol ANS: 4. Draw: glycerol ANS: 5. Draw: 2‚ 4‚ 6-trinitrophenol ANS: IUPAC Naming Instructions: Provide proper IUPAC names. 6. Name: ANS: (E)-2-ethylbut-2-en-1-ol 7. Name: HOCH2CH2OH ANS: 1‚ 2-ethanediol or ethylene glycol 8. Name: ANS: allyl alcohol or 2-propen-1-ol 9. Name: ANS: hydroquinone
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DIRECTIONS 1. USING GRAPH PAPER construct the following graphs BY HAND. Make sure to label the axes (include units) and give each graph a title. Make sure to use an appropriate scale. 2. Answer the questions. 3. USING LOGGER PRO construct the same graphs. Compare your results. 1. Several samples of pure tin were weighed and placed in a graduated cylinder filled with water to measure their volume by water displacement. Show the relationship between the mass and volume of the samples
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============================================================================ 1. (22 points) _____ 2. (12 points) _____ 3. (27 points) ____ 4. (15 points) _____ 5. (24 points) _____ Total (100 points) _________________ Your Name(print):___ANSWER KEY Your TA’s Name (print):___________________ Fall 2009‚ 5.111 Exam #3 solution key Problem 1 (22 points total; 2 points each question). Page 2 of 10 Give one example of each of the following: (i) a pure liquid with an extremely
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hem ESSENTIAL QUANTUM MECHANICS This page intentionally left blank Essential Quantum Mechanics GARY E. BOWMAN Department of Physics and Astronomy Northern Arizona University 1 Great Clarendon Street‚ Oxford OX2 6DP Oxford University Press is a department of the University of Oxford. It furthers the University’s objective of excellence in research‚ scholarship‚ and education by publishing worldwide in Oxford New York Auckland Cape Town Dar es Salaam Hong Kong Karachi Kuala Lumpur
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problem and to save our environment from various harmful effects of polythene‚ this exhibit has been prepared. SCIENTIFIC PRINCIPALS:- This is based on the following principals:- 1. Prevention of soil and air pollution caused by polythene. 2. Utilisation of row polythene by converting it in to useful products likes‚ carbonic acid (H2CO3) and fuel. MATERIALS USED:- Thermo cool charts‚ cotton‚ stand‚ pipe‚ card board. CONSTRUCTION & WORKING :- The plant consists of four furnaces
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