Given that you have 14.5 moles of n2, how many moles of h2 are theoretically needed to produce 22.5 moles nh3 according to the reaction n2 + 3 h2 → 2 nh3 ? 1. 21.8 moles h2 2. 33.8 moles h2 3. 43.5 moles h2 4. 2.33 moles h2 5. 78.8 moles h2 6. 15.0 moles h2 7. 489 moles h2

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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