For practice I need to answer the following questions:

1. Short Answer ( 15 points total). Be complete but brief. (a) (1 point) If you were estimating the energy that could be extracted from a fuel in a practical device like a gas turbine engine, explain why you would use the lower heating value (LHV) of the fuel instead of the higher heating value (HHV). (b) (1 point) For the Chain initiation steps below, what's the physical reason why the first one occurs only at higher temperatures while the second one can occur at lower temperatures. H2+MH+H+MH2+O2HO2+H (c) ( 2 points) In the potential energy diagram below, calculate the activation energies for the forward and reverse reactions