What is the excess reactant for the following balanced equation when 13 moles of alf3 are mixed with 9 moles of o2

AlF₃ is the excess reactant

Explanation:

We are given;

We are required to identify the excess reactant;

First; we write a balanced equation for the reaction between O₂ and AlF₃

    4AlF₃ + 3O₂ → 2Al₂O₃ + 6F₂

Second, determine the mole ratio of  AlF₃ to O₂

Third; we determine the excess reactant.

Therefore; Oxygen gas is the rate limiting reactant and AlF₃ is the excess reactant (1 mole excess).

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

b is the correct answer

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