Which statement concerning relative rates of reaction is correct for the chemical reaction given below? 2 N2O(g) 2 N2(g) + O2(g) a) The rate of appearance of N2 is equal to the rate of appearance of O2. b) The rate of disappearance of N2O is two times the rate of appearance of N2. c) The rate of disappearance of N2O is half the rate of appearance of O2. d) The rate of appearance of N2 is two times the rate of appearance of O2. e) The rate of disappearance of N2O is equal to the rate of appearance of O2.