Answer Happy

11. 12. 3. The decomposition of ethylene oxide. (CH₂)20(9) CH4(g) + O2(g) is first order with a half-life of 56.3 min at 415°C. How long (in min.) oxide to decompose at this temperature? 10. Cyclopropane decomposes to propane at 450°C. The decomposition is a first-order reaction with a rate constant at 450 of 0.0560 min. What is the half-life of cyclopropane at 450°C? a) 1.22 min b) 2.33 min c) 4.66 min d) 8.26 min e) 12.4 min The thermal decomposition of N:Os proceeds as follows: 2NO(g) 4NO2(g) + Oxg) This is a first-order reaction with a rate constant of 5.10 x 10 s¹ at 318 K How long would it take 20.0% of NO decompose at 318 K? a) 5.97 s b) 7.36 s c) 438 s d) 3160 s e) 1360 s it take for 90.0% of a sample of ethylene Consider the reaction A → products If a plot of 1/[A] versus time is a straight line, what can be said about this reaction? a) The reaction is zero-order. b) The reaction is first-order. c) The reaction is second-order. d) The reaction order is -1. e) None of these statements is true. The reaction below occurs in one elementary bimolecular step. What is the rate law for this reaction? 2NO₂(g) → O(g) + NzO₂(g) a) rate= K[NO₂] b) rate= k[NO₂P c) rate= k; [NO₂)2 [0₂][N₂0₂] [0][NO] [NO₂] d) rate = e) rate= K[NO₂]² ow To 1o no