What happens as the activation energy increases? The pressure of the system decreases.
The kinetic energy of colliding molecules changes.
The reactant surface area decreases.
The reaction begins to slow down.

What is the most important factor in determining climates.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?