In the electrowinning process, a Metallurgical/Chemical Engineer uses an Infrared (IR) camera to detect metallurgical short-circuits (hot spots) over the anodes and cathodes. Given that the mass of an electron is 9.109× 1031 and Rydberg’s constant is 1.090×107 −1 , determine the energy (in MJ) applied when 5 mol of IR photons having a wavelength of 32 nm is used in the copper electrolysis process.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible 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!

if you need further assistance, let me know: )

~ trueboss72

може ли да зареждате повече информация, моля

0.88m hope i am correct : )