Evaporation & Intermolecular AttractionsDCP:3CHOTemperature(initial)0.05 TiTemperature(final)0.05 TfChange in T0.1 TTime taken1s t21.8 5.3 16.5 21919.1 5.3 13.8 17820.2 5.4 14.8 221Average time taken: (21978)/320614sAverage T: 6.534.5.35CHOTemperature(initial)0.05 TiTemperature(final)0.05 TfChange in T0.1 TTime taken1s t19.5 13.9 5.6 38219.8 14.3 5.5 42520.4 14.2 6.2 508Average time taken:(382450)/4382sAverage T: 5.6.)/6.614CHTemperature(initial)0.05 TiTemperature(final)0.05 TfChange in T0.1 TTime taken1s t21.3 8.6 12.7 17619.7 6.0 13.7 16621.0 6.7 14.3 179Average time taken:(1769)/3174sAverage T: 2.34.60525CHOTemperature(initial)0.05 TiTemperature(final)0.05 TfChange in T0.1 TTime taken1s t18.9 10.7 8.2 17919.9 10.3 9.6 19019.2 10.2 9.0 260Average time taken:(179026)/31027sAverage T: 8.26.)/8.532()CHOTemperature(initial)0.05 TiTemperature(final)0.05 TfChange in T0.1 TTime taken1s t21.2 17.9 3.3 48021.3 18.1 3.2 30821.2 17.6 3.8 407Average time taken:(48037)/39857sAverage T: 3.2.)/.4023CHO35614CH25O32()CHOEvaporation efficiency(/s)0.073 0.016 0.782 0.042 0.009Conclusion:The rate of change in temperature over time shows how fast the substance evaporates. The larger the value is, the quicker the substance evaporates. As a result, the substances are arranged according to the increasing value of evaporation efficiency is shown: , , , and . This 32()CHO35CH253COH614order also implies the decreasing order of intermolecular forces since stronger intermolecular force makes the substance harder to evaporate.Evaluation:Look through all of the data, the uncertainty of the data is very large, especially on the time counting. This shows that each time the substance evaporates at a different rate. The main reason causing this problem is that the air flows at different speed while carrying on the experiments. People moves and walks nearby the test tubes. So the substance evaporates differently. To solve this problem, it might be better to close the doors and windows, and do not make any movements when starting to collect the data. In addition, another reason causing the problem is that the areas of the filter paper have differences which made the amount of solutions is not constant each time. In order to solve this problem, we need to cut each piece of paper into exactly the same shape and area. That might reduce the differences of the amount of solutions the filter paper sucks in. With these two methods mentioned above, the uncertainty of the experiment would be smaller. Kurt Lu DP11111