Need help with some chemistry questions

1. Rank the following in order of increasing volume: a. bacterium b. virus c. water molecule.

2. rank the following in order of increasing force of attraction between its submicroscopic particles: a. sugar b. water c.air

3. which weighs more a liter of water at 20c or a liter of water at 80c

4. a supersonic jet heats up considerably when traveling through air at speeds greater than the speed of sound. as a result, the jet in flight is several centimeters longer than when it is on the ground. offer an explanation for this length change from a submicroscopic perspective.

5.why is perfume typically applied behind the ear rather than on the ear?
Asked Sep 14, 2014
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Answered Feb 26, 2018

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