3) The catalytic decomposition of nitrous oxide by gold at 900C and an initial pressure of 200 mm mercury was 50% completed in 53 minutes and 73% completed in 100 minutes. Assume the reaction is essentially irreversible. (a) Can you determine the molecularity of the reaction? (b) What is the order of reaction? (c) How much will decompose in 100 minutes at the same temperature, but for an initial pressure of 600 mm