During an endothermic phase change, what happens to the potential energy and the kinetic energy?
potential energy stays the same, and kinetic energy increases.
potential energy increases, and kinetic energy increases.
potential energy decreases, and kinetic energy decreases.
potential energy increases, and kinetic energy stays the same.

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

How are isotopes of the same chemical element alike? how are they different?