One in a series of reactions that inflate airbags in cars is the decomposition of
sodium azide (NaN3). Use the following balanced equation: 2 NaN3 --> 2 Na +3
N2 Determine the mass of N2 produced if 100.0 grams of NaN3 is decomposed

A.) 35.62 grams
B.) 55.80 grams
C.) 64.63 grams
D.) 72.89 grams

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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