Exam 1 Notes - Adam Golman Notes for Exam 1 Chemistry 103...

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Adam Golman Notes for Exam 1 Chemistry 103 1. Lecture 1 a. Sig Figs i. Multiplication and Division 1. Use the smaller amount of Sig Figs ii. Addition and Subtraction 1. Use the smaller decimal places 2. Lecture 2 a. Memorize Conversions (page 22 in lecture notes) i. C = 5/9 ( F – 32 ) ii. F = 9/5 C + 32 iii. K = C + 273 b. Extensive vs Intensive Quantities i. Extensive = quantities dependent on the amount 1. ii. Intensive = quantities independent on the amount 1. c. Density = ( M / V ) d. Dimensional Analysis (remember Sig Figs) e. Types of Error i. Determinate Error or Systematic Error (bias in data) 1. Ex: A Clock is 10 minutes slow (negative bias) 2. Measure: the difference between the true and measure value ii. Indeterminate or Random Error (random imprecision) 1. Ex: vibration in a balance table (both positive and negative) 2. Look at page 28 for examples 3. Measure using all sorts of experimental sampling
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Adam Golman Notes for Exam 1 Chemistry 103 iii. Measuring Indeterminate Error (page 29 ) 1. Standard deviation the square root of the sum of the calculated value minus the average value squared divided by n-1 a. Variance is s 2 b. Relative standard deviation= s/X average i. Coefficient of Variation = Relative * 100% c. Standard Deviation of the Mean = s/ n 2. Q-test 3. Confidence Interval
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This note was uploaded on 05/14/2008 for the course CHEM 103 taught by Professor Kramer during the Spring '08 term at University of Delaware.

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Exam 1 Notes - Adam Golman Notes for Exam 1 Chemistry 103...

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