Labratory Techniques and Measurments

1186 Words5 Pages
Jessica Loper Date of Experiment: February 5, 2013

Report Submitted: February 11, 2013

Title: Laboratory Techniques and Measurements

Purpose: To gain knowledge about the International System of Units and use it to determine volume, mass, length, and temperature. To learn to use these forms of measurement to determine density and concentration, as well as learning basic lab equipment to create dilutions.

Procedure:
Part 1: After reading the various information given, I gathered different objects and measured them using both centimeters and millimeters then converted them to meters. Next, I recorded the temperature of hot tap water and boiling water as
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The water could resist boiling at 100°C because you could be above or below sea level, causing the boiling point to slightly rise or fall depending on your geographical location. B. [(102-100)/100]*100 = 2% [(99.2-100.0)/100]*100 = -.8% C. 1.20 g/mL D. 1.35 cm3 E. The measurement would be incorrect as some of the water could potentially splash out of the beaker. F. Calculated volume gives a more accurate measurement as finding the volume of the displaced water can be more difficult than making errors while taking dimensions. G. The density of the sample is about 15 g/cm3. From this, we can draw the conclusion that it is not real gold, as its density is about 19.30 g/cm3. H. In order to prepare 10 mL of 0.25 M HCl solution, you need dilute 2.5 mL of 1M HCl to 10 mL by adding (10 mL - 2.5

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