Chemistry, 19.10.2019 03:50 marchellepenuliar

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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What is a catalyst defined as? a. a substance that speeds up a reaction only b. a substance that sp...