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A chemical formula written above or below the yield sign indicates:

Athat a gas is formed.

Bthat the substance is used as a catalyst.

Cthat heat must be supplied.

Da reversible reaction.

Verified Answer :

MissPhiladelphia

I believe the correct answer from the choices listed above is option B. A chemical formula written above or below the yield sign indicates that the substance is used as a catalyst. I am certain with this answer. Hope this helps. Have a nice day.

yedida

B. that the substance is used as a catalyst. i took the test

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