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10 points

How may the formation of a gas indicate that a chemical reaction has occurred?



Formation of a gas or precipitate indicates that an irreversible reaction has occurred


Formation of a gas indicates that a physical reaction has occurred


Gases are given off every time a chemical reaction occurs


Formation of a gas is a physical property of all chemical reactions

Item at position 4
4

Sagot :

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Answer:

Gases are given off every time a chemical reaction occurs

Explanation:

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