Precision and Accuracy in the Laboratory Precision – This is a word used to describe the quality; fact or condition of being exact and accurate.(1) Accuracy – This is a word to describe the quality or state of being correct or precise. (2) AIM: The aim of the practical is to assess the accuracy and precision of three types of pipette. Abstract: In this experiment‚ I am going to be assessing the accuracy of a 10ml graduated pipette‚ a 1ml blowout pipette and a Gilson P1000 automatic pipette. This
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01.07 Accuracy and Precision: Balance Lab Worksheet Measurement * Measurement is an important skill used for data collection and data analysis. Careful attention to the accuracy and degree of uncertainty of each measuring device is necessary for proper data collection. Significant figures are used to record or report measurements accurately. * This laboratory activity will give you the opportunity to get more familiar with some of the basic measuring devices that are common in chemistry
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Chemistry and Society Jessica Yadira Lopez CHM/110 November 10‚ 2014 Jennifer Cruz Chemistry and Society Chemistry plays a huge and important role in society; Society depends on the accuracy and precision of measurements for products sold by the retail industry‚ such as a gallon of gasoline‚ a bushel of corn‚ or a liter of bottled water. These measurements have to be precise and accurate when it this relates to how farmers sell their products such as wheat‚ corn‚ milk‚ peanuts‚ and cotton‚ by
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The language is entirely accurate apart from very occasional first draft slips. Sentence structure is varied and shows that the candidate is able to use various types of sentences to achieve a particular effect. Vocabulary is wide and is used with precision. Punctuation is accurate and helpful to the reader. Spelling is accurate across the full range of vocabulary used. Paragraphs are well-planned‚ have unity and are linked. The
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This watermark does not appear in the registered version - http://www.clicktoconvert.com UNIT – I LESSON –1: TALLY FEATURES CONTENTS 1.0 Aim and Objectives 1.1 Introduction 1.2 Tally User Classification 1.2.1 Single user - Silver 1.2.2 Multi user – Gold 1.3 Tally Activation Form 1.4 General features 1.5 Accounting feature 1.5.1 Comprehensive accounting system 1.5.2 Categorization of account 1.5.3 Ledger group administration 1.5.4 Audit trail‚ Drill down display 1.5.5 Extracting reports 1.5.6
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01.07 Accuracy and Precision: Balance Lab Worksheet Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure Access the virtual lab and complete the experiments. Data Below is the table that you will complete for the virtual lab. Either type your results into this table or print the table from the virtual lab (it must be submitted to receive full credit for this assignment.) To print from the virtual
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Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams) 25.55 25.56 25.55 Volume of liquid (milliliters) 8.8 8.65 8.5 Mass of graduated cylinder and liquid (grams) 30.65 30.62 30.565 Part II: Density of Irregular-Shaped Solid Mass of solid (grams) 39.537 38.515 40.975 Volume of water (milliliters) 50.01 49.9 52.4 Volume of water and solid (milliliters) 54.9 54 57 Part III: Density of Regular-Shaped
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Pipetting‚ weighing‚ accuracy and plotting Introduction In this practical‚ there were three parts in which basic skills and key ideas were put into practice as they are essential to working in the laboratory in order to get reliable and valid results; one of the basic skills put into practice was pipetting. This was the main objective for the whole practical‚ as pipettors are the fundamental tools used to measure liquids in laboratories. Not only did this develop the skills and confidence acquired
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Stage 2 Chemistry Investigation Folio: Practical – Galvanic Cell Name: YY Names of Partner: ZZ Part A Investigation Design Proposal: Purpose of Experiment: To determine the effect of concentration of reactants on the current produced by a galvanic cell. Hypothesis: The greater the concentration of solution in the two half cells reacting with the two metals to produce current‚ the greater the flow of current will be produced from the galvanic cell. Independent Variable: Concentration
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Math Practice Lab Pre-Lab Questions: 1. The rules concerning handling significant figures are as follows: When dividing/multiplying The answer has no more significant digits than the number with the fewest significant digits (the least precise figure). Round off after calculations have been performed. When adding/subtracting Answer has no more places than the addend‚ minuend‚ or subtrahend with the fewest number of decimal places. Significant figures are irrelevant when adding/subtracting
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