Question

what is reagent justify​

Answer 1

Answer:

The limiting reagent (or limiting reactant or limiting agent) in a chemical reaction is the substance that is totally consumed when the chemical reaction is completed. The amount of product formed is limited by this reagent, since the reaction cannot continue without it. If one or more other reagents are present in excess of the quantities required to react with the limiting reagent, they are described as excess reagents or excess reactants (xs).

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Answer 2

A reagent  is a substance or compound added to a system to cause a chemical reaction, or added to test if a reaction occurs.