Question 12 Achieve HW

[George_Furey_1C]

Hey guys I'm just wondering how to get to kJ/mol in the second part of question number 12 from the achieve homework. I got the right answer but I'm not sure how to do it still.

[Tala Hamdan 3B]

From the first part of the question, we know the electron affinity in units eV per atom, from this, we can get the value in units J per atom. 1 eV= 1.602 x 10^-19 Joules, so we would just have to multiply the electron affinity by this value to obtain it in J/atom.

After this, you multiply the value in J/atom by avogadros number (6.02 x 10^23) since it is the number of atoms in 1 mol. Then you just multiplyt he value you get by 10^-3 since 1 KJ= 10^3 J.

I hope this helps!