Answer:
the reactant left over after the reaction is called the excess reactant
The reactant, which is leftover in a chemical reaction is known as the excess reactant.
• A reactant present in an excess amount that is needed to combine with all of the limiting reactants is known as an excess reactant.
• It is the one, which remains in the reaction mixture once the consumption of all the limiting reactants is done.
• The excess reactant can be determined by subtracting the mass of the excess reactant with the mass of the excess reactant consumed in the reaction.
• The excess reactant is not used completely in a chemical reaction, it is used partially.
Thus, the given blank can be filled with the excess reactant.
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