2800hw2 - Brittney Brown September 15, 20010 Chem 2800/L...

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Unformatted text preview: Brittney Brown September 15, 20010 Chem 2800/L Table 1.The analytical balance measurements Step # Object Mass ± 0.1 mg. (3 res) Mean Mass Stdev %RSD 3 Watch Glass 48.7869 48.7869 1.5275x10-4 3.1309x10-4 48.7868 48.7871 4 Filter Paper 0.4267 0.4267 1.1547x10-4 2.7060x10-2 0.4265 0.4265 5 Glass + Paper 49.2136 49.2136 49.2136 49.2136 6 Watch Glass 48.7868 48.7866 2.0817x10-4 4.2670x10-4 48.7864 48.7865 7 Glass + Fingerprint s 48.7869 48.7870 1.1547x10-4 2.3668x10-4 48.7871 48.7871 8 Glass + Breath 48.7867 48.7865 2.8170x10-4 4.2670x10-4 48.7863 48.7864 9 Hot Glass (30s) 48.7798 48.7809 7.7825x10-4 a.5950x1-3 (60s) 48.7803 (90s) 48.7808 (120s) 48.7812 (150s) 48.7815 (180s) 48.7819 10 Filter Paper 0.4262 0.4261 1.0000x10-4 2.3690x10-2 0.4260 0.4261 + Initial 0.4260 0.4261 2.0817x10-4 4.8855x10-2 0.4259 0.4263 The measurements taken with the balance were precise. All of the measurements fell within the range of ± 0.1 mg. Some possible errors in weighing that could have occurred were taking the range of ± 0....
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This note was uploaded on 02/03/2011 for the course CHEM 2800 taught by Professor Staff during the Fall '08 term at Kennesaw.

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2800hw2 - Brittney Brown September 15, 20010 Chem 2800/L...

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