A proposed mechanism for the decomposition of ozone consists of the three steps shown below. Step 1: 03(g) + NO(g) → O2(g) + NO2(g) Step 2: NO2(g) → NO(g) + O(g) Step 3: 0(g) +03(g)-2 02(g) A. There is no catalyst B. NO O CO OD. NO2 O E. 03 aof water?

8. Smelling salt decomposes spontaneously at room temperature by the equation below. A student places a 10.00-g sample into a 1-liter sealed rigid vessel. What measurements should the student make to determine the rate of this reaction?(NH4)2CO3(s)→2NH3(g)+H2O(g)+CO2(g) a. change in mass and temperature b. temperature and time c. change in mass and time d. change in pressure and time

Time, s C3H8], M 0.0 0.26 10.0 0.18 20.0 0.14 30.0 0.10 . 40.0 0.064 .50.0 0.052 M

16.  The decomposition of hydrogen bromide is 2 HBr(g)    →    H2(g)  +  Br2(g) The reaction has rate constants of 7.23 x 10-8 M-1 s-1 at 5.00 x 102 K and 9.14 x 10-6 M-1 s-1 at 6.00 x 102 K. What  is the activation energy in kJ/mol? Group of answer choices 136 kJ/mol none of the answers are correct 145 kJ/mol 107 kJ/mol 121 kJ/mol