In terms of energy, how would you classify the following chemical reaction? . 2cu + o2 2cuo + 315 kj. a] endothermic. b] exothermic. c] both endothermic and exothermic. d] neither endothermic nor exothermic

  Our equation is: 

2Cu + O₂ --> 2CuO + energy. 

Notice that "energy" is in the list of products (energy was "produced" from the reaction). That means the reaction with exothermic (answer is B). 

The number of medals awarded to the track team during the season.

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.