Student Manual

The philosophy of the present task is derived from Experiment 1.7 except that the vaporization will be measured using a force sensor (instead of a mass balance). See Fig. 1. Use the provided software (Logger Lite) to connect to the force sensor through the provided interface. Record the mass loss of liquid nitrogen as a function of time. Then systematically supply energy to the liquid using a heating lament. Measure the power delivered to the heater and the duration of heating. Switch the heater o , and allow the nitrogen to re-establish its natural background vaporization rate. Plot the mass loss and use it to determine the latent heat of vaporization.

Sample ResultsThe mass gradient of Liquid Nitrogen using force sensor
Experiment Code1.7A
Version26 November 2015, 2015-v3

Further Readings and References

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Pictorial Procedure