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iren [92.7K]
3 years ago
7

Which of the following methods will usually cause a reaction to speed up? Combining the reactants at a lower temperature. Reduci

ng the concentration of reactants. Grinding one of the reactants into a powder. Removing the catalyst.
Chemistry
2 answers:
Aneli [31]3 years ago
6 0
Ans: grinding one of the reactants into a powder.

this increases the surface area and hence there would be more chances of collisions happening. therefore reaction rate would increase
vredina [299]3 years ago
3 0

The answer is A. Changing the temperature from 90ºC to 40ºC

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