Cu (s) + ½ O2 (g) → CuO (s) CuO(s) + Cu(s) → Cu2O(s) ΔH = -22 kJ/mol

2CuO(s) → Cu2O(s) + ½ O2(g) ΔH = +115 kJ/mol

i think so it’s will be b yes i believe its

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a