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List 2 everyday situations in which it would be useful to identify unknown substances.
answered
Jul 16, 2017
Chemistry
high-school
2
votes
153k
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Chemical reactions are more likely to happen when _____. electrons are in an excited state electrons are in the lowest possible energy level electrons are part of a full octet electrons are in the ground
answered
May 6, 2017
Chemistry
high-school
4
votes
162k
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What problems did cities face as a result of rapid growth during the industrial revolution?
answered
Nov 12, 2016
History
high-school
3
votes
83.2k
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