How much HNO3 can be made from 25.0 g of NO2 according to the following reaction?

1. Find the molar mass of NO2 (46.01)

2. Find the number of moles in 25 g of NO2 (by dividing 25 by the molar mass)     25/46.01 = .54

3. For every 3 moles of NO2 there are 2 moles of HNO3. multiply the number of moles of NO2 by 2/3

.54 x 2/3 = .36

4. Finally, multiply this number by the molar mass of HNO3 (63.018)

.36 x 63.018 = 22.68 g HNO3

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

i think that the answer is c