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23 February, 09:59

Which expression represents a reaction rate?

a. time/mass

c. energy/time

b. number/time

d. time/energy

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Answers (1)
  1. 23 February, 12:49
    0
    C. Energy/Time is the expression that represents a reaction rate.

    Reaction rate is the speed at which a chemical reaction happens. Because it involves speed, time must be present. Chemical reaction involves energy. So a reaction rate must be energy over time.
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