A 2.00g sample of ammonia is mixed with 4.00g of oxygen. Which is the limiting reactant and how much excess reactant remains after the reaction has stopped?

the answer is minerals.

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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