For the balanced equation shown below, if the reaction of 40.8 grams of C6H6O3 produces a 42.8% yield, how many grams of H2O would be produced ?
C6H6O3+6O2->6CO2+3H2O

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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