4. Cyclobutane decomposes to ethylene according to the equation C4H8 (9) ►2C2H4 (g) Determine the order of the reaction and rate constant based on the following pressures, which were recorded when the reaction was carried out at 430 oC in a constant-volume vessel. In [A] = In A Jo- In[p] Time (s) PC4H8 (mmHg) 5.991 0 400 S. 756 2,000 316 5.513 4,000 248 5.578 6,000 196 5.043 8,000 155 4.804 10,000 122