Calculations Convert all actual temperature readings from degrees Celsius to Kelvins. Divide each volume by each KELVIN temperature, and enter the result in the data blank. According to theory, each volume divided by its Kelvin temperature should give about the same answer as every other volume/temperature calculation. Did yours? Another way of saying this is that V/T = a constant (or V = KT) + Make a graph of volume vs. temperature in Kelvins for the trapped air sample. Refer to the guidelines on graphing given in Experiment 6. Draw the best straight line among the points. Make another graph of volume vs. temperature, this time starting the axes at (0,0). (If you drew your first graph correctly, it should not start at (0,0).) For this second graph, your data points will not cover most of the page. Draw the best straight line through the data points, extrapolationg the line until it hits the x-axis. This corresponds to y=0 (zero volume). At what temperature does the line cross the x- axis? This is your experimental estimate of "absolute zero", the lowest temperature possible. It corresponds to the temperature at which all molecular motion stops. Questions Why do we use the thermometer markings as volume units in this experiment? Why is it acceptable to use arbitrary volume units in this experiment?DATA 5 6 Data point number: 1 2 3 4 Volume reading at bottom of tube (in degree units) O 0 O O Volume reading at top of air column/bottom of oil plug (in 14. 9 degree units) 4.4 14. 1 3.8 3.7 Volume of air sample in degree units 4. 9 4, 4 4. 1 3.8 3 . 7 Temperature in C 10 0 80 160 40 / 20 Temperature in Kelvins 37:315 383.15 353-15 313. 15 293. 1 283, 15 V of air sample/T in Kelvin 0. 013 0.013 / 0.01 0. DB3 0.013 0:01