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Artist 52 [7]
3 years ago
15

A pure substance that is present before a reaction but not after Super Confused

Chemistry
1 answer:
never [62]3 years ago
4 0

Explanation:

Pure subsance is a substance that is made up of only one type of particle - each piece is the same throughout.

Being present before the reaction but not after means it's no the same (it couldve evaporated)

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