Help me answer this 2 question please

41. In comparison to a reaction pathway without an enzyme, the activation energy for a reaction pathway provided by an enzyme will be and the value of H for the reaction will ii i 1 poir the value of H for the reaction will. A B C D 20. One reason that copper pipes rather than iron pipes are used in 1 point household plumbing is that iron has a greater tendency to be oxidized than copper ironywill react with dissolved minerals such as calcium salts copper is a better conductor of heat energy than iron commercial drain cleaners containing sodium hydroxide will react with iron