A 2.36 gram sample of NaHCO3 was completely decomposed in an experiment 2NaHCO3 Na2CO3 + H2CO3 in this experiment carbon dioxide and water vapors combine to form H2CO3 after decomposition the Na2CO3 had a mass of 1.57 grams 1. Determine the mass of the H2CO3 produced 2. Calculate the percentage yield of H2CO3 for the reaction

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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