STOICHIOMETRY 3.Use this equation to answer the questions below: Br2 + Cl2 → 2BrCl.

a. How many moles of BrCl form when 2.74 mol Cl2 react with excess Br2?

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Explanation:

Br₂(g)   +    Cl₂(g)     =>   2BrCl(g)

excess   2.74mole        ?moles

Rxn ratio is 1mole Cl₂(g) : 2mole BrCl  which means the yield of BrCl must be larger mole value than the Cl₂(g) mole value. This is accomplished by multiplying the given moles Cl₂(g) by a ratio of coefficients that will make the results larger.

moles BrCl(g) produced = 2/1(2.47mole BrCl(g) = 5.48 mole BrCl(g)

answer; i believe that the correct answer is (a); a large rock being weathered by wind and rain;

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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