Which statement best describes the energy of activation? a. it is not affected by a catalyst b. it is lower if the reaction temperature decreases c. it is higher if the reaction temperature increases d. it is more quickly overcome when the temperature increases

When the water vapor cools it condenses select a number that represents his process on the

Calculate the number of molecules present in 0.750 mol of mgo.

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2