lab 1 analysis - Pinkey Rahman(pr59889) BIO 205L 1) For...

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Pinkey Rahman(pr59889) BIO 205L 1) For 60ml, error= 1.1% For 4-ml, error= 0.75% 2) a) 0.28g b) 0.56g 3) a) The measurements are so small that the percent error in weighing would surpass any miscalculation due to not calibrating. SO recalibration would take up valuable time, and may not even have an impact on the final results of the experiment. b) A top-loading balance could be useful but an analytical balance would be preferred because they are made to weigh to the fourth place or one tenth of a milligram. Therefore give a more accurate measurement. 4) The different measuring devices are used to demonstrate the varying degrees of accuracy of each device Automatic pipettes are equipped with pipette pumps that are made to measure small volumes of liquid. And the graduated cylinders are meant to be used for measuring larger amounts of solution. 5) In order to determine the density, both the exact mass and volume must be determined.
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This note was uploaded on 10/31/2009 for the course BIO 205L taught by Professor Hanson during the Spring '07 term at University of Texas at Austin.

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lab 1 analysis - Pinkey Rahman(pr59889) BIO 205L 1) For...

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