Scan_Doc0092 - 184 Chapter Five Gases Mercury added Table...

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184 Chapter Five Gases Mercury added Table 5.l. Actual Data from Boyle's Experiment Volume Pressure Pressure x Volume (in 3 ) (in Hg) (in Hg x in 3 ) 117.5 12.0 14.1 X 10 2 -1 87.2 16.0 14.0 X 10 2 ~ 70.7 20.0 14.1 X 10 2 58.8 24.0 14.1 X 10 2 Gas If JlI Gas h I I 44.2 32.0 14.1 X 10 2 j 35.3 40.0 14.1 X 10 2 29.1 48.0 14.0 X 10 2 Mercury Figure 5.4 A J-tube similar to the one used by Boyle. When mercury is added to the tube, pres- sure on the trapped gas is increased, resulting in a decreased volume. Boyle's law: Vex: 1/P at constant temperature Graphing is reviewed in Appendix 1.3. p r 50 - - - - - - - - - - : I pr---------~---- \2( : ---- o ' ~ 40 ~ 100 on ::c: ~ c, (a) 40 §' ;:-20 0 0 ------_./ 2V V (irr') slope = k 0.01 0.02 0.03 liP (in Hg) (b) the properties can be discovered. These relationships are often represented pictorially ls means of graphs (plots). We will take a historical approach to these laws to give you some perspective 0 scientific method in action. Boyle's Law
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