moestaBlaGeexv moestaBlaGeexv

20-09-2016
Chemistry

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what is a catalyst defined as? a. a substance that speeds up a reaction only b. a substance that speeds up a reaction, and is not used up c. a substance that speeds up a reaction, and is completely used up d. a substance that slows down a reaction, and is completely used up

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xlilredridinghoodx xlilredridinghoodx

20-09-2016

The answer is b. a substance that speeds up a reaction, and is not used up.

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