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Chemistry
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OpenStudy (anonymous):
1. What does it mean in chemistry if something is "pure"? (Many more questions)
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OpenStudy (aaronq):
it means that there aren't any other substances present.
OpenStudy (anonymous):
If a boat is made of materials that are more dense than water, meaning that it should sink. How is it that boats can float?
OpenStudy (aaronq):
the boat is hollow and there is air inside of it, which is less dense than water
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