How many molecules of O2 are produced from 192 grams of
SeO2? 2Cu2O3 +8SeO2 -->4CuSe2 +11 O2

did anyone actually do this? like if anyone has submitted this i rly need .

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

the answer is true. hope it .