Electron transfers and these processes occur faster than expected in a harpoon reaction. These processes occur between A and A-star in the Lindemann mechanism. The rate of these processes can be calculated as the square root of [read slowly] “eight times k B T, divided by the product of pi and the reduced mass” times sigma. The frequency of these processes times a (*) steric factor gives the (10[1])Arrhenius pre-exponential factor. Velocity does not correlate to the time between these processes, during which a molecule will travel one mean free path. The ideal gas law can be derived by defining pressure as the force of these events, which are “effective” when they occur at proper orientations. For 10 points, name these events that kinetic molecular theory assumes are elastic. ■END■