Temperature and volume data

Trial	Temperature (Celsius)	Volume (mL)
Starting Volume	Room Temperature =
Hot Water Trial 1
Hot Water Trial 2
Cold Water Trial 1
Cold Water Trial 2

Note: On the graph, you are graphing volume on the y axis, temperature on the x axis. Use a line graph - not a bar graph. You should have a linear graph, and if all goes right, you can extrapolate back so that the x axis is crossed at 0 K or -273 C.

1. What happened to the volume of gas when the syringe was submerged in each water bath? Using the concepts discussed above, describe why this occurs, keeping in mind the definition of temperature.
2. How do you know that pressure is held constant in your experiment?
3. Using a ruler, draw a straight line of best fit through your data points, extrapolating the line until it intersects the (negative) x-axis. Why can you assume a straight line, i.e., a linear relationship?
4. At what temperature does your line intersect the x-axis? What volume corresponds to this temperature?
5. Would it be possible to cool a real gas down to zero volume? What would most likely happen first?
6. Is your measurement of absolute zero close to the actual value (-273 °C)? How might you change the experiment to get closer to the actual value?
7. When does the gas in the syringe do work? When is work being done on the gas inside?