Chemistry 11 Santa Monica College Determination of Molecular Mass via the Dumas Method Objectives: • To determine the molecular mass of an unknown volatile liquid using the Dumas method and the ideal gas law. Background: In the early 19th century‚ Jean-Baptiste Dumas‚ a distinguished French chemist‚ created a relatively simple method for determining the molecular mass of a volatile substance. In this experiment we will use a modified version of his technique to determine the molecular
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discolour the sauce‚ especially if an aluminium saucepan is used. Take care when handling large containers of hot food. Do not push or pull the pan suddenly or the contents may splash out. Two-handled pans may need two people to move them safely. Methods of Cookery In most cases‚ the food to be stewed needs to be cut into an even size and sealed and browned by shallow frying in hot fat. The liquid can be thickened and flavourings added before the actual stewing begins. Salt should not be added at
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What Is Portfolio? Although portfolios are used in the assessment of student’s performance in nowadays‚ they are used as a method by architects‚ painters‚ photographers and artists in showing their works. However‚ as portfolio has been used for different purposes it maybe different from than that of artists. It is not possible to use only one definition for portfolio. Definition of portfolio may change according to users’ purpose and way of usage. Many researchers defined portfolio in order
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t 1.) description 2.) narration 3.) exposition 4.) anecdote 5.) process 6.) character sketch 7.) definition 8.) classification 9.) exemplification 10.) cause and effect 11.) comparison and contrast 12.) details 13.) analogy Examples 1.)Descriptive paragraphs are often used to describe what a person looks and acts like. Read this example descriptive paragraph‚ notice how descriptive paragraphs are arranged by putting together all the sentences about the same thing. Here is an
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PSY 225 Research Methods Spring 2013 Review Sheet Exam 1 CHAPTER 1 Why is the methods course believed to provide a “foundation” for other psychology courses? Hint: process vs. content. A methods course teaches a process (of doing research) that applies to other content courses. How do research psychologists use the terms determinism and objectivity? +Determinism= the idea that events‚ including psychological ones‚ have causes statistical determinism= events can be predicted‚ but only
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Research Methods in Psychology PSY 540 September 9‚ 2013 Instructor: Research Methods in Psychology Descriptive statistics give us a way to sum up and express our data but do not allow one to make a judgment related to ones theory. When delivering a test of diversity there are two primary techniques of sum up the data using descriptive statistics. The primary direction to measure the central tendency for two conditions (mean‚ median or mode.) The second technique to show date is
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The methods used to gather the data has consisted of primary research‚ Questionnaires were created which held 20 questions‚ around 149 questionnaires were handed out to the public of ages 16-25. A range of open and closed questions where used within the questionnaire to gain qualitative and quantitative information from the users. The open questions provide a deeper understanding of what the user wants and how they want it; this is more relevant to the interviews which have been done on different
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Statistical Methods 2011Fal Quiz #1--Key Date: 10/25/2011 A. MULTIPLE CHOICE QUESTIONS (50%) 1. Temperature is an example of a variable that uses a. the ratio scale b. the interval scale c. the ordinal scale d. either the ratio or the ordinal scale 2. The nominal scale of measurement has the properties of the a. ordinal scale b. only interval scale c. ratio scale d. None of these alternatives is correct. 3. Statistical studies in which researchers control variables of
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Standard Costing and Variance Analysis Formulas: Learning Objective of the article: 1. Learn the formulas to calculate direct materials‚ direct labor and factory overhead variances. This is a collection of variance formulas / equations which can help you calculate variances for direct materials‚ direct labor‚ and factory overhead. 1. Direct materials variances formulas 2. Direct labor variances formulas 3. Factory overhead variances formulas Direct Materials Variances: Materials
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book. Q3 One hears the word research being mention by several groups such as research organization‚ college and university professors‚ doctoral students‚ graduate assistants working for faculty‚ graduate and undergraduate students doing their term papers‚ research departments in industries‚ newspaper reporters‚ journalists‚ lawyers‚ doctors‚ and many other professionals and nonprofessionals. In the light of what you have learned in this chapter‚ which among the aforementioned groups of people do you
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