...1.) A scientific theory is a widely accepted and both highly tested and proven explanation based on observable phenomenon that occurs in nature. Scientific theories are supported by a large amount of evidence. On the other hand, a hypothesis is an explanation for a scientific question, but is easily testable and falsifiable. A prediction is a guess of what will happen when conducting an experiment, but a hypothesis establishes a relationship that helps to explain how the conductor of the study came up with his/her prediction. For example, a prediction would be “salt is dissolvable in water”, and a hypothesis would be “the polar water molecules will separate the ionic NaCl compound causing the salt to dissolve.” If the predictions are accurate, the hypothesis is supported. Hypotheses that are useful for explaining the natural world are easily testable, falsifiable, and parsimonious. When proposing an explanation for why something happens in the natural world, the explanation (hypothesis) must not be ambiguous or difficult to test/prove. A hypothesis that would not be useful for explaining the natural world would be “dogs hate cats because cats resemble predators that walked the earth millions of years ago” because it is not falsifiable. There would be no way one could set up a study to either prove or disprove the hypothesis. A hypothesis that would be useful for explaining the natural world would be “tumors are caused by the build-up of certain radioactive molecules”...
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...Statement of Goals The goal of the group project was to calculate the percent calcium in a natural calcium tablet from Prime Eastern Pharmaceuticals in order to compare it with the reported amount of 800 mg of calcium per tablet to determine the validity of complaints regarding a reduced amount of mineral in the multivitamin. The quantitative determination of the analyte was accomplished through three experiments: complexometric titrimetry, flame atomic absorption analysis, and potentiometry using an Ion Selective Electrode. The complexometric titrimetry involved titrating the unknown calcium solution made from the calcium tablet with standardized EDTA. Quantitative determination of the analyte calcium was possible due to the stable and quick formation of the metal-EDTA complex with a 1:1 reaction stoichiometry. Flame atomic absorption analysis is useful in determining the amount of analyte in an unknown because the measure absorbances of standard solutions can be used to plot a calibration curve that can be used to determine the concentration of the metal in an unknown solution. Potentiometry is useful for determination of analyte when an ion sensitive electrode is used to find the amount of ion in standard solutions. Week 1: Introduction and Background The first test for calcium in the multivitamin was complexometric titrimetry, a titration of a solution of calcium tablet with a standardized solution of EDTA. EDTA forms a stable complex with calcium metal with a reaction...
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...London School of Engineering and Materials Science Laboratory report writing instructions DEN101 - Fluid Mechanics 1 Flow Rate Measurement Experiment A. Student Student Number: 1234567 Version 2.0, 27 November 2010 Template for Word 97-2003 Abstract This document explains what is expected in your Fluids 1 lab report. The sections that should be covered are outlined and a structure you could follow is proposed. Detailed advice on how to edit the report is given. The document concludes with the marking criteria for this lab report. Table of Contents Abstract 2 1. Introduction 3 1.1. Writing 3 1.2. Editing and formatting 3 1.3. Content of the introduction 4 2. Background and theory 4 3. Apparatus 4 4. Test 4 5. Experimental procedure 4 6. Results 5 7. Discussion 5 8. Conclusions 5 9. References 5 10. Appendix A: Marking criteria 6 Introduction Before starting to write a report, you should think about what is your audience. Am I writing for colleagues who want a lot of detail how it is done, or am I writing for my boss who just wants an executive summary as he has no time for details? In general, there is not a single type of audience and we have to make our writing suitable for the detailed read, as well as the fast perusal. To understand what is required from you in this report, please have a look at the marking criteria in the Appendix. 1 Writing To limit...
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...Studies N-7 HUM-Huma Ijaz N-1 Math-Imran Zulfiqar Chem-Amjad Riaz Cheema Chemical Process Principles I N-11 Calculus I 2 Chemical Process Principles I 2 English Comprehension and Composition 2 Islamic Studies 2 Lab-Engineering Drawing 2 Lab-Physics for Chemical Engineers 2 Physics for Chemical Engineers 2 Tuesday Monday English Comprehension and Composition Calculus I N-7 N-12 Chem-Amjad Riaz N-11 Wednesday Phy-Dr. Saif Ur Rehman Physics for Chemical Chemical Process Engineers Principles I N-18 HUM-Dr. Musferah Mehfooz N-19 Math-Imran Zulfiqar Cheema Dr. Saif Ur Rehman / Dr. Ishrat Sultana Thursday Islamic Studies Calculus I Lab-Physics for Chemical Engineers N-15 N-3 Applied Physics Lab Chem-Muhammad Imran Rafiq Friday Lab-Engineering Drawing PC Lab-C Lessons/week 14 Timetable generated:11/13/2014 aSc Timetables Final Time Table - Fall 2014 ( v 20141113-1130 ) CIIT_Lahore FA14-BEC-B (Semester 1) (DDP) 2 10:00 - 11:30 Math-Syed Tahir Raza Rizvi 1 8:30 - 10:00 HUM-Huma Ijaz 3 11:30 - 1:00 4 1:30 - 3:00 5 3:00 - 4:30 6 4:30 - 6:00 7 6:00 - 7:30 Subjects Count English Comprehension and Composition Calculus I N-10 Phy-Dr. Ayesha Anjum N-4 HUM-Huma Ijaz Calculus I 2 Chemical Process Principles I 2 English Comprehension and Composition 2 Islamic Studies 2 Lab-Engineering Drawing 2 Lab-Physics for Chemical Engineers 2 Physics for...
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...ONES-BLAIR® has been assessed by... AJA Registrars and registered against the requirements of ISO 9001:2008 for design and manufacturer of paints and coatings for sale to the industrial and construction markets. ISO 9001:2008 specifies requirements for a quality management system where an organization * needs to demonstrate its ability to consistently provide product that meets customer and applicable statutory and regulatory requirements, and * aims to enhance customer satisfaction through the effective application of the system, including processes for continual improvement of the system and the assurance of conformity to customer and applicable statutory and regulatory requirements. Providing the Highest Quality Products... JONES-BLAIR Company is a fully integrated research, manufacturing and marketing organization headquartered in Dallas, Texas. We consist of two divisions: (1) JONES-BLAIR High Performance Coatings for industrial OEM, maintenance applications and corporate re-imaging coatings, and (2) NEOGARD surface-applied waterproofing, seamless epoxy flooring, elastomeric roofing and wall coating systems. Since 1928 our mission has been to provide the business community with the highest quality products accompanied by unparalleled customer service. Our record of longevity and growth speaks volumes about our accomplishment of these simply stated goals; however, you deserve to know the business philosophy that drives our success. After all, any product, sold to...
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...Fall 2015 Analytical Chemistry I Quantitative Analysis Chem 341WI 4 Credit Hrs | Instruction Mode: L (lab) and P (class) Professor Andrew Holder holdera@umkc.edu • SCB 113 • 816-235-2293 • 913-543-3709 (fax) Office Hours: T/Th 1:00-4:00, 5:00 – 7:30 Lecture: T/Th 4PM | Labs: T/Th 1PM (AFT), 5PM (EVE) Credit: Lab + Lecture = 4 credits | Format: Lab + Lecture (P) Lecture / Class Policies and Procedures Correspondence with UMKC Student Learning Outcomes Scientific Reasoning & Quantitative Analysis * Apply principles/methods of sciencea, mathb, statisticsc and logicd to solve problems and draw logical inferences. * Chpt 3: Experimental Error (c) * Chpt 4: Statistics (c) * Chpt 6: Chemical Equilibrium (a, b, d, e, f) * Chpt 7: Activity & Systematic Trtmnt, (a, d, e, h) * Chpt 8: Monoprotic Acid-Base Equil., * Chpt 9: Polyprotic Acid-Base Equil. (a, d, e, g, h) * Develop quantitative literacy enabling comprehensione and evaluationf of info in broad contexts. * Chpt 3: Experimental Error, Chpt 4: Statistics (f) * Chpt 5: Quality Assurance and Calibration Methods (c) * Understand methodsg/principlesh of scientific discovery and their application * Sxn 0-2: The Analytical Chemist’s Job (g, h) * Sxn 0-3: General Stages in a Chemical Analysis (g, h) * Chpt 2: Tools of the Trade (g) * Carrying out laboratory analyses (g, h) ...
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...Laboratory Report Style Guide A formal lab report is how you communicate the details of an experiment to the outside world. There are many ways of writing up a laboratory experiment. You have probably already done different forms in science and biology classes. The format we will use in this class is called “journal article format,” because it is the same format that scientific journals require for published articles. More practically, it is the format required by most colleges. It more or less resembles the format of an English term paper. Sections Summary A standard journal article laboratory report is organized into the following sections: Title: A single sentence fragment (no verb) that describes your experimental objective and gives some indication of the method (procedure). Abstract: A one-paragraph summary of the entire experiment—your procedure, results, and analysis. Introduction: A description of the scientific background for your experiment, including any previous experiments that your experiment builds on. (Remember to cite your sources!) The final sentence (analogous to the thesis statement in a term paper) is the objective of your experiment. Materials and Methods: A detailed description (in paragraph format) of the procedure for your experiment. Results: Your data, as you observed/recorded it. Note that this section is only for data that you observed or measured directly. Your analysis (including calculations) belongs in the Discussion section...
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...2014-2015 Undergraduate Academic Calendar and Course Catalogue Published June 2014 The information contained within this document was accurate at the time of publication indicated above and is subject to change. Please consult your faculty or the Registrar’s office if you require clarification regarding the contents of this document. Note: Program map information located in the faculty sections of this document are relevant to students beginning their studies in 2014-2015, students commencing their UOIT studies during a different academic year should consult their faculty to ensure they are following the correct program map. i Message from President Tim McTiernan I am delighted to welcome you to the University of Ontario Institute of Technology (UOIT), one of Canada’s most modern and dynamic university communities. We are a university that lives by three words: challenge, innovate and connect. You have chosen a university known for how it helps students meet the challenges of the future. We have created a leading-edge, technology-enriched learning environment. We have invested in state-of-the-art research and teaching facilities. We have developed industry-ready programs that align with the university’s visionary research portfolio. UOIT is known for its innovative approaches to learning. In many cases, our undergraduate and graduate students are working alongside their professors on research projects and gaining valuable hands-on learning, which we believe is integral...
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...CHEM 145 is absolutely the best advanced lab class one can take at Harvard. It is not only well designed, taught, and graded, but it will also give you the chance to befriend some of the best teaching staff you will ever meet. At the end of the semester, you will become such a pro at giving presentations, and you will feel competent to work for any inorganic or organic chemistry lab. The course itself is very nicely structured. Throughout the semester, you will be trying to synthesize a Co or Fe catalyst, which at the end you get to do some research and use your product for catalysis of your choice. The course kicks off with synthesizing the ligand in the hood, but soon moves onto metalation, reduction, and catalysis in your own glove box...
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...VINCENNES UNIVERSITY CATALOG Vol. LXIX August, 2010 No. 61 A COMPREHENSIVE TWO-YEAR COLLEGE OFFERING ASSOCIATE DEGREES IN THE LIBERAL ARTS, SCIENCES, EDUCATION, ENGINEERING, AND TECHNOLOGY AND OFFERING BACCALAUREATE DEGREES IN SPECIALIZED AREAS Accreditation The North Central Association of Colleges and Schools 30 North LaSalle Street, Suite 2400, Chicago, IL 60602 (312) 263-0456 www.ncacihe.org FAX 312-263-7462 Accreditation Review Council on Education in Surgical Technology and Surgical Assisting American Bar Association American Board of Funeral Service Education American Health Information Management Association Association of Collegiate Business Schools and Programs Commission on Accreditation of Allied Health Educational Programs Commission on Accreditation in Physical Therapy Education Federal Aviation Administration Higher Education Coordinating Board of the State of Washington Indiana State Board of Nursing Joint Review Committee on Education In Radiologic Technology National Alliance of Concurrent Enrollment Partnerships National Association of Schools of Art and Design National Association of Schools of Theatre National League for Nursing Accrediting Commission Printing Industries of America, Inc. Approved for Veterans Membership The American Association of Community Colleges Aviation Technician Education Council The Council of North Central Two Year Colleges The Higher Education Transfer Alliance The National Academic Advising Association The North Central Association...
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...Chem 1A Brown 3 July 2014 Density Lab Report Objective: The purpose of this lab was to experimentally determine the density in three different investigations. Prelab procedure outline: What is the Density of an Egg? 1. Obtain the egg and note any observations. 2. Obtain a 400-ml beaker. 3. Add 200-ml of water into the beaker. Record the volume. 4. Place the raw egg into the water and record the volume and any observations. 5. Add NaCl into the water and stir until dissolved. 6. Stop adding NaCl once the top of the egg reaches the meniscus of the water. 7. Determine the density of the egg and the salt solution. Calculations: Beaker = 137g Beaker + Liquid = 337g Mass liquid = 337g – 137g = 200g Density of NaCl solution = 200g / 137mL = 1.46 g/mL Prelab Analysis Outline 1. Subtract mass of empty beaker from mass of filled beaker to calculate mass of liquid. Mliquid=mbeaker+liquid-mbeaker 2. Divide NaCl liquid mass by NaCl liquid volume to find density. D=mliquid/137mL Procedure, Data and Results Obtain egg. Obtained and cleaned 400mL beaker. Weighed the 400mL beaker. 400mL beaker = 137.4635g Filled beaker with 200mL of water. Weighed on analytical balance. Beaker + water = 337g Placed egg in water and noted observations including water displacement. Added NaCl into the solution until the egg floated. Beaker + NaCl solution = 200g Calculated density of NaCl solution. Density of NaCl solution = 200g / 137mL...
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...« Study and create flashcards for free at Cram.com Sign In | Sign Up StudyMode - Premium and Free Essays, Term Papers & Book Notes Essays Book Notes AP Notes Citation Generator More Experiment 4: properties of gases By swifty217, june 2013 | 2 Pages (480 Words) | 76 Views | 4.5 1 2 3 4 5 (1) | Report | This is a Premium essay for upgraded members Sign Up to access full essay DID YOU LIKE THIS? TELL YOUR FRIENDS... Send Report Submitted: June 21, 2013 Title: Properties of Gases Purpose: To analyze a few physical and chemical properties of gases as well as using those properties to identify the gases. Procedure: * For Hydrogen I placed a piece of Zn metal into a test tube with diluted HCl. * To produce oxygen I added Hydrogen peroxide to manganese. * Next, I added baking soda to vinegar. This caused a quick and energetic reaction! The gas from the reaction I pumped into some Limewater. * Then I mixed Alka Seltzer and water and pumped the gas caused by that reaction into some limewater. Data: Data Table: Experiment Results | Gas | Flame Reaction | Glowing Splint | Limewater reaction | Bromothymol blue reaction | Hydrogen | It enlarged the flame. | | | | Oxygen | It lit up quickly | | | | Hydrogen & oxygen | It puts it out. | | | | Carbon dioxide | It puts it out | | It bubbled and turned cloudy. | It turned it yellow | Alka Seltzer | | | Bubbles stayed in the...
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...ABET Self-Study Report for the COMPUTER ENGINEERING PROGRAM at QASSIM PRIVATE COLLEGES BURIDAH, SAUDI ARABIA First of June 2015 Table of Contents Introduction 3 Requirements and Preparation 3 Supplemental Materials 4 Submission and Distribution of Self-Study Report 4 Confidentiality 5 Template 5 BACKGROUND INFORMATION 7 GENERAL CRITERIA 9 CRITERION 1. STUDENTS 9 CRITERION 2. PROGRAM EDUCATIONAL OBJECTIVES 11 CRITERION 3. STUDENT OUTCOMES 12 CRITERION 4. CONTINUOUS IMPROVEMENT 13 CRITERION 5. CURRICULUM 15 CRITERION 6. FACULTY 17 CRITERION 7. FACILITIES 20 CRITERION 8. INSTITUTIONAL SUPPORT 22 PROGRAM CRITERIA 23 Appendix A – Course Syllabi 24 Appendix B – Faculty Vitae 25 Appendix C – Equipment 26 Appendix D – Institutional Summary 27 Signature...
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...CHEM. 201, EXPERIMENT 4 TITRATION CURVES PROCEDURE: See the pre-lab report on page 15 of my laboratory notebook for an outline of the general procedure. The unknown acid number was 6553, and the concentration of NaOH used in the experiment was .09912 M. Also, three drops of phenolphthalein indicator were added to the initial titration and the titration curve. EXPERIMENTAL DATA: Initial Titration: * Volume of NaOH added at the endpoint was 29.8 mL Titration Curve: * Volume of NaOH added at the endpoint was 29.0 mL CALCULATED RESULTS: Acid concentration from first titration was .118M Ka from initial pH was 1.08x10^-5 Acid concentration from titration curve was .115M Titration | Volume of NaOH (mL) | pH | (base)/(acid) | pKa | Ka | 1/4 | 7.25 | 4.1 | 1/3 | 4.577 | 2.65x10^-5 | 1/2 | 14.5 | 4.6 | 1 | 4.6 | 2.55x10^-5 | 3/4 | 21.8 | 5.19 | 3 | 4.713 | 1.94x10^-5 | Average: | | | | 4.663 | 2.18x10^-15 | DISCUSSION: The purpose of the experiment was to titrate a weak acid of unknown concentration with a strong base, NaOH, and then utilizing an initial titration and titration curve to determine that acid concentration and Ka. After performing the initial titration of the acid concentration, we calculated it to be 0.118 M, with a Ka of 1.08x10^-5. On the other hand, when we performed the titration curve, it calculated an acid concentration of 0.115 M and a Ka of 2.18x10^-5. The results I obtained seemed reasonable...
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...Chem‐106 Grignard Synthesis of Triphenylmethanol Objective: The purpose of this experiment is to synthesize triphenylmethanol from benzophenone via Grignard reaction. The product will be isolated through extractions and purified by recrystallization. Reaction efficiency will be evaluated through percent yield, percent recovery, and the purity of the final product will be determined by IR, TLC, and mp determination. Chemicals: bromobenzene, magnesium turnings, diethyl ether, benzophenone, biphenyl, triphenylmethanol, iodine, 6 M HCl, brine, anhydrous MgSO4 or Na2SO4, 10:90 EtOAc/hexanes. Glassware and equipment: 100 mL RBF, air condenser, Claisen adaptor, 60 and 125 mL addition funnel, short stem glass funnel, two 50 mL Erlenmeyer flasks, 10 mL graduated cylinder, lab jack, crystallizing dish, magnetic stir bar. Techniques: reflux, extraction, vacuum filtration, recrystallization, TLC, mp, IR spectroscopy. Introduction In 1912 Victor Grignard received the Nobel prize in chemistry for his work on the reaction that bears his name, a carbon-carbon bond-forming reaction by which almost any alcohol may be formed from appropriate alkyl halides and carbonyl compounds. The Grignard reagent RMgBr is easily formed by redox reaction of an alkyl halide with magnesium metal in anhydrous diethyl ether solvent. R-Br + Mg → RMgBr The Grignard reagent can be viewed as an ionic species consisting of carbanion R-, with Mg2+ counterion and an additional Br- counterion. The carbanion...
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