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DrBob2

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I don't understand this question. Surely you can tell the difference between a solid and a gas. Of have I missed something?
Personally, I think your sample had a little water in it. At least that would account for the discrepancy. As for the molar mass, I've not worked with polymers like this before. That's a new way of doing it so I learned something. As for the pdf site, my
F = (9/5)*C + 32 C = (F-32)*5/9 There are 4.184 J in 1 calorie.
An alkene.

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