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Report 1 - Meaurement

# Report 1 - Meaurement - Date Performed September 9 2010...

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Date Performed: September 9, 2010 Name: Allan Gibson Date submitted: September 16, 2010 Partner: Patrick Mason Instructor: Ahmad Adam Measurement 1 Objective To measure temperature changes in water under different expiremental conditions. To become familiar with common laboratory equiptment, with measuring, and with the concept of significant figures. To make a good laboratory notebook record of your work. To write a report of your laboratory results including written description, tabulation of results, and the presentation of graphs. Experimental Data A. The cooling of water Time (Min) Beaker Temp. (°C) Cup Temp. (°C) 0 74.0 74.24 5 61.5 62.34 10 50.0 50.81 15 45.1 44.56 20 37.5 38.21 25 35.9 36.26 30 33.0 33.21 35 30.5 30.83 40 28.9 28.83 45 27.8 27.34 50 26.6 26.22 55 26.4 25.35 60 25.5 24.29 B. Mixing Hot and Cold Water Step Vol. in cup (mL) Vol. added (mL) Initial Temp. (°C) Final Temp. (°C) 1 50.0 10.00 78.56 59.46

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2 60.0 10.00 59.46 52.02 3 70.0 10.00 52.02 47.23 4 80.0 10.00 47.23 43.10 5 90.0 10.00 43.10 40.33 Initial temperature of cold water= 24.78°C Sample Calculations 60.0mL of Water(Hot) + 10.00mL of Water(Cold) = 70.0mL of Water(Mixed) 74.0°C-.99°C=73.01°C≈73.0°C .9178 g/mL x 50.0 mL = 4.6 g
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Report 1 - Meaurement - Date Performed September 9 2010...

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