For the decomposition of nitrous oxide at 565 °C 2 N2O → 2 N2 + O2 the following data have been obtained: [N2O], M 2.36 1.20 0.808 0.607 Time, s 0 6.17 12.30 18.50 What is the average rate of disappearance of N2O over the time period from t = 6.17 s to t = 12.30 s (For the answer, just enter the numerical value, 3 sig digs)