Use the References to access important values if needed for this question. For the decomposition of ammonia on a platinum surface at 856 °C 2NH3-N2 + 3 H the average rate of disappearance of NHj over the time period from t-0stot 6319 s is found to be 1.50x106 Ms The average rate of formation of H2 over the same time period is Ms1. An error has been detected in your answer. Check for typos, miscalculations etc. before submitting your answer Submit Answer