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With hydrogen bonds there are definitive changes in acoustic properties from the normal but London dispersion forces and the size of a molecule have little to do with it. Strong dipole-dipole forces have extreme effects on sound properties and a solid structure can cause diffraction, but apart from that the changes seem to be too small to measure for anything London dispersion forces can do.
From the experimentation, it is concluded that whales that are within ~ to a sonar testing site are in direct danger of death by resonance.
1. The speakers were imperfect at reproducing some of the frequencies. A random error was created. Values that were not within the speakers’ reproduction range were, of course, removed and our data was sorted to remove the frequencies that were unnatural. Of course, using better speakers would have helped.
2. The area around the pipe is not completely sound proof and the energy might be dispersing from particle to particle through the Styrofoam rather than the test material in the pipe. The purpose is, then, to make all of the sound be able to go through the sample space and the rest be deadened by insulation – either add more insulation around the sample space or use a more insulating material around the sample space.
3. With the various temperatures of water, the water was heating up or cooling down as it was being tested and it also expanded or contracted the pipe that it was inside of. The PVC pipe gets extremely stretchy and flexible at temperatures of about 45°C. A random error is created. The error was unnoticeable with the PVC pipe but it can be fixed by using a different, stiffer material.
4. Only one pipe was used throughout testing and it was contaminated with the residue of the previous chemicals tested. A random error is created. This can be fixed by cutting out several pieces of pipe of the same length (they can be reused for the same substance – but not mixed with others) to get more precise results.
5. The human eye was used to read the decibel meter and the thermometer. The decibel meter was annoying to read and the values can be inaccurate because at one angle the arrow looks like it can be at +1, while at other times it seems like it is at +0.5dB. A random error is created. A digital readout decibel meter can be used in conjunction with a digital readout thermometer.
6. Each and every time the pipe was set in place or the cover lifted, there was a movement in the position of the sample. A random error is created. Perhaps PVC was too flexible. If possible the rubber stoppers can be cut to not exceed the overall diameter of the pipe so as the pipe can be put into a tight fitting rubber chamber where it can not change position while being inserted or taken out.
7. The sample chemicals used were not pure. A random error was created. An evacuated bottle could have been used with electrolysis for the creation of gases like pure hydrogen to make their collection easier and the samples should have been vaporized (if possible) and then recollected.