I have ten moles of iron atoms in the reactant side of a reaction. Do I have enough information to determine how many moles of iron atoms I will have following the reaction? If so, how many moles of iron atoms will I have at the end of a reaction? If not, what else do I need to know?

You will have 10 iron moles

Explanation: This is due to the law of conservation of mass. The amount of atoms going in the reactant side of a reaction has to be equal to the amount of atoms in the product side

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.

that's it!

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~ trueboss72