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When the forward and reverse paths of a change occur at the same rate, a. the system is conserved. b. the system is in equilibrium. c. the change must be physical. d. the change must be chemical.
asked
Apr 20, 2017
Chemistry
high-school
2
answers
2
votes
192k
views
Where was the Olmec civilization was located in?
asked
Apr 16, 2017
History
high-school
1
answer
4
votes
163k
views
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