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Charles' Law

# Charles' Law - Richard Alvarez Charles Law Purpose The...

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Richard Alvarez Charles’ Law Purpose: The purpose of this experiment is to measure the volume of a fixed quantity of gas at different temperatures while finding the value of “absolute zero” from experimental observations. Also, we will learn to graph volume vs. temperature in order to verify Charles’ Law and use a microcomputer to obtain “the best straight line” and the value of “absolute zero”. Introduction: For each degree Centigrade increase in temperature, the volume of a sample of gas increases by 1/273 of it’s volume at 0°C. Or conversely, for each degree Centigrade decrease in temperature, the volume of a sample of gas will decrease by 1/273 of its volume at 0°C. Procedure: Obtain a large test tube, a thermometer and a Charles’ Law tube with a small rubber band. Setup the apparatus as shown in Figure 9.1 in your lab book. The Charles’ Law tube is placed inside the test tube with the open end up. During

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