CHEM 1332 SPRING 2008 – (NEW) FINAL 1. How much energy is needed to convert 180 grams of ice at -10 ºC to liquid water at 10 ºC? (The molar heat capacity of liquid water is 75.4 J/mol ºC; the molar heat capacity of ice is 40.2 J/mol ºC. The molar heat of vaporization of water is 40.7 kJ/mol. The molar heat of fusion of water is 6.02 kJ/mol.) (A) 71.8 kJ (B) 419 kJ (C) 64.2 kJ (D) 64.6 kJ (E) 11‚620 J 2. Which physical property of a liquid is NOT the result of strong intermolecular
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Chem 140C Practice Midterm I Answer Key April 2013 Q1_________(- points) Q2_________(- points) Q3_________(-- points) Q4_________(-- points) Q5_________(-- points) Q6_________(-- points) Total_________(100 points) Only use the front side of each page for your answers. Nothing on the back sides will be graded. If you write the exam in pencil or erasable pen‚ you give up your right to any kind of regrade. Name_______________________ PID#_________________________ 1. Amine Basicity (5 points)
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WELCOME! Analytical Chemistry CHEM 2354 Analytical Chemistry CHM 2354‚ Winter 2015 Schedule: Monday LAB 14:30-18:30 Marion Hall (MRN) Room: 301 Tuesday DGD Thursday DGD Thursday LEC Tuesday LEC 14:30-15:30 14:30-15:30 08:30-10:00 10:00-11:30 HGN FSS Montpetit Hall (MNT) Montpetit Hall (MNT) Room: 302 Room: 2005 Room: 202 Room: 202 Instructor: Professor Maxim Berezovski Office: Address: D’Iorio Hall room 201 Phone: 613-562-5800 ext. 1898 e-mail: Maxim.Berezovski@uottawa.ca web page: http://mysite
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chromatography Question 3 1 / 1 point Vacuum tubing is the thick-walled black tubing‚ not the skinny tygon tubing. Question options: True False Question 4 1 / 1 point Match the letters to the safety equipment. (You have to enter numbers 1-6 as answers) __3__ C __4__ D __6__ F __2__ B __5__ E __1__ A 1. fire extinguisher 2. glass waste box 3. trash can for regular waste 4. safety shower 5. eyewash station 6. dustpan and broom Attempt Score: 4 / 4 (100.00 %) Overall Grade (highest
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Experiment 5 COMMON ION EFFECT MALUBAY‚ Justin Damian PADRILLAN‚ Hazel Rose CD2‚ Group 5 Ms. Sarah Sibug 6 April 2013 ------------------------------------------------- ------------------------------------------------- I. ABSTRACT The common ion effect occurs when a given ion is added to an equilibrium mixture that already contains that ion‚ and the position of equilibrium shifts away from forming more of it. This paper is a follow-up of the experiment which aims to determine the common-ion effect
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CHEMISTRY 17 1ST LONG EXAM REVIEWER I. ELECTRONIC STRUCTURE OF ATOMS -arrangement of atoms’ electrons -the number of electrons in an atom -distribution of electrons around the nucleus and their energies • ATOMS *Billiard Ball Model (JOHN DALTON) *Plum Pudding Model (JOSEPH J. THOMPSON) *RUTHERFORD’s Model of Atom -atoms are tiny‚ hard‚ indivisible spheres -electrons (negative charge) occupy the atom - Atom is mostly empty space with a dense nucleus • PROBLEMS with Rutherford’s Model
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Acidic vs. Alkaline Introduction: Potential of hydrogen‚ or pH‚ is a scale used to express the acidity or alkalinity of a solution. The scale ranges from 0 to 14‚ below seven represents acidity‚ seven is neutral‚ and more than seven is basic. Acid-base indicators show whether the solution is acidic or alkaline. They do this by reacting with the solution‚ seen as a color change‚ as the concentration of hydrogen (H+) or hydroxide (OH-) ions changes in an aqueous solution. Different indicators
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EXPERIMENT 1: Proteins -polypeptides compose of > 50 amino acids Functions 1. Enzymes or subunits of enzymes-enhancing the rates of reactions 2. Structural or Mechanical roles 3. Immune response roles 4. Storage and transport of substances 5. Source of amino acids for organisms that cannot synthesize amino acids naturally ISOLATION- disruption of cell membranes to release cell contents; separation for other contaminants 1. CENTRIFUGATION 2. SALTING OUT-water
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Vanden Eynden CHM2510 AU13 Practice Midterm Exam #2 CHM2510 Practice Midterm Exam #2 This exam is designed to give you a small glimpse as to the format of the exams I write. The content of the exam has no direct correlation to the difficulty of the actual exam you will take. Use this exam as another problem set so you can get a little more practice in where multiple chapters are combined into one document. It would greatly benefit you to try doing this exam first WITHOUT ANY NOTES
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XV. GIMNAZIJA International Baccalaureate Department Group 4 – Chemistry SL Lab no.2: Acid-base titration Student: Caterina Rende Dominis Teacher: Zrinka Toplićan Date: 19 November 2012 Data Collection and Processing (DCP) Aspect 1: Recording raw data Table 1 Table showing raw data collected from titration Known measurements 25 mL of diluted acid 0‚100 M of NaOH solution Measurement Number | V of alkali needed to neutralize acid /mL/ (±0.01 mL)
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