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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 :

taskmasters

a. that a gas is formed.
b. that the substance is used as a catalyst.
c. that heat must be supplied.
d. a reversible reaction.

A chemical formula written above
or below the yield sign indicates that the substance is used as a catalyst. The
answer is letter B.

yedida

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

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