(a) Consider the reaction of hydrogen bromide with oxygen, given below: 4HBr(g)+1O2(g)2Br2(g)+2H2O(g) If HBr(g) is decreasing at the rate of 0.470mol/s, what are the rates of change of O2(g),Br2(g), and H2O(g) ? O2(g)/t=mol/sBr2(g)/t=mol/sH2O(g)/t=mol/s (b) The decomposition reaction given below: 2NOCl(g)2NO(g)+1Cl2(g) is carried out in a closed reaction vessel. If the partial pressure of NOCl(g) is decreasing at the rate of 710 . torr/min, what is the rate of change of the total pressure in the vessel? Ptot/t=torr/min