(a) Consider the chlorination of methane, given below: 1 CH4(g) + 4 Cl2(g) 1 CCl4(g) + 4 HCl(g) If CH4(g) is decreasing at the rate of 0.720 mol/s, what are the rates of change of Cl2(g), CCl4(g), and HCl(g)? Cl2(g)/t = mol/s CCl4(g)/t = mol/s HCl(g)/t = mol/s (b) The decomposition reaction given below: 2 N2O5(g) 4 NO2(g) + 1 O2(g) is carried out in a closed reaction vessel. If the partial pressure of N2O5(g) is decreasing at the rate of 123 torr/min, what is the rate of change of the total pressure in the vessel? Ptot /t = torr/min