R = reactants P = productsFor the above energy profiles, which reaction has the highest activation energy?
A. a
B. b
C. c
D. d
E. All have the same activation energy.
Answer: D
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Judge the following sentence according to the criteria given below: Economically exploitable deposits
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Worldwide, the single most important chemical weathering agent is ________
A) carbon dioxide B) water vapor C) water D) oxygen E) nitrogen
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