CHEM 1211K - Lab Report 2 - Experiment 2 Precision Accuracy...

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Experiment 2Precision & Accuracy of MeasurementsKy HoangEmily Adams September 2, 2015CHEM 1211KSection B03TA: Anne MarieHonor Pledge – Freshman Chemistry LaboratoriesI did not copy any portion of this work from the work of other students,old lab reports, or unreferenced materials. I understand that such activityis a violation of the Georgia Tech Honor Code.______________________________________Signature
II. Data and Resultsa.Data tables and PlotsPercent error=|truevaluemeasured value|true valuex100Nominal mass of sweetener = 1gBalance 2 used for measurements of multiple packets
b.Sample Calculation 1: Concentration of Kool-Aid Solution in 100 mL flaski.M=molLii.m ol=1105L=0.1Liii.M=1105(0.1)L=1104mol/L
c.Sample Calculation 2: Concentration of Solution in Test Tube 1 i.C1V1=C2V2ii.C1=1104Miii.V1=0.001LV2=0.005Liv.C2=(1104M)(0.001L).005LIII. Discussiona.Objectivesi.The objective of part A was to become familiar with measuring mass in the lab, usingseveral balances. Step A-2 served to show accuracy across multiple packets, while step A-3 allowed us to experiment with precision across different balances. It showed the significance of significant figures because all of the numbers that came

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