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Experiment #2Precision and AccuracyHonor 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
Data & Results:A. Balance Use: When is a Gram a Gram?Table 1. General Data from Part ANominal mass of sweetener (g)1Mass of empty packet (g)0.241Number of single balance5Table 2. Variation in Mass Across Packets of SweetenerPacket No.Mass of Contents +Packet (g)Calculated Massof Contents (g)11.221.23431.21941.20551.236Mean (g):Standard Deviation (g):Plot 1. Absorbance vs. Concertation for Kool-Aid Solutions B. Measuring LiquidsTable 4. Precision of Graduated Cylinders of Various VolumesCylinder SizeSmallest Graduation(ml)Estimated Precision(ml)250.50.110010.11000101Water Temperature(ºC):20Water Density (g/ml):1
Discussion:The Objective of Part A was to identify different types of laboratory glassware and use them for appropriate purposes. The purpose of part A was to determine the accuracy and precision of both the weights of 5 samples of sweetener packets as well as the 5 balances used in lab. Table 1 provided us with general data for the nominal mass which was 1g and the mass of anempty packet which was 0.241g. Table 2 shows the differences in the masses of random sweetener packets and how they differ from the nominal amounts. The nominal amount of

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