Questionn 4
4 nh3(g) + 3 o2(g) - 2 n2(g) + 6h20(9)
if the standard molar heats of formation of ammonia, nh3(g), and gaseous water, h2o(9), are -46 kj/mol and -242 kj/mol, respectively,
what is the value of ah 298 for the reaction represented above?

212121212121212122121212121121212122121212121212121212121n i think

c.

explanation:

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