1. In a study of the decomposition of ammonia on a platinum surface at 856C NH31/2N2+3/2H2 the following data were obtained: Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 3.42103M is starting concentration is 1.71103M is (2) The average rate of disappearance of NH3 from t=0 s to t=1000 s is Mss1. (3) The average rate of disappearance of NH3 from t=1000s to t=1.50103s is Ms1. (4) Based on these data, the rate constant for this order reaction is Ms1, 2. In a study of the gas phase decomposition of hydrogen peroxide at 400C H2O2(g)H2O(g)+1/2O2(g) the following data were obtained: Mint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.135M is s and when the starting concentration is 6.75102M is s. (2) The average A(1/[H2O2])/t from t=0s to t=15.5s is The average (1/[H2O2])/t from t=15.5s to t=46.5s is M1s1, M1s1. (3) Based on these data, the rate constant for this order reaction is M1s1