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OpenStudy (dee101):
What must happen before a chemical reaction can begin?
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OpenStudy (sapphiremoon):
Generally, you have to have the right reactants. Then, if the reaction wouldn't occur spontaneously (like by itself just if you put the reactants in the same container) you'd need some source of activation energy or a catalyst or something. Not quite sure what you're going for here, more info? Welcome to OS, btw!
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