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Common observations of a chemical reaction are described in the Introduction section. For each observation, name a common or everyday occurrence that must involve a chemical reaction. Look at pic, need
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Common observations of a chemical reaction are described in the Introduction section. For each observation, name a common or everyday occurrence that must involve a chemical reaction.

Look at pic, need it asap!

Common observations of a chemical reaction are described in the Introduction section-example-1
User Sergei Rogovtcev
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Answer:

12x+4x-7y+45b+78a-44b+1a+1z+0d+1.1a+1.1a

User Candance
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