(a) Consider the combustion of ethylene, C2H4(g) + 3 O2(g) 2 CO2(g) + 2 H2O(g). If the concentration of C2H4 is decreasing at the rate of 0.036 M/s, what are the rates of change in the concentrations of CO2 and H2O? (b) The rate of decrease in N2H4 partial pressure in a closed reaction vessel from the reaction N2H4(g) + H2(g) 2 NH3(g) is 74 torr per hour. What are the rates of change of NH3 partial pressure and total pressure in the vessel?

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(a) Consider the combustion of ethylene, C2H4(g) + 3 O2(g)  2 CO2(g) + 2 H2O(g). If the concentration of C2H4 is decreasing at the rate of 0.036 M/s, what are the rates of change in the concentrations of CO2 and H2O? (b) The rate of decrease in N2H4 partial pressure in a closed reaction vessel from the reaction N2H4(g) + H2(g)  2 NH3(g) is 74 torr per hour. What are the rates of change of NH3 partial pressure and total pressure in the vessel?

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