Two samples of oxygen gas of equal volume contain the same number of moles. One sample is at 250C and the other is 1000C. Which statements is true:
O the molecules have the same average kinetic energy
O the molecules at 1000C have more kinetic energy
O temperature does not have any effect on the kinetic energy of molecules
O the molecules at 25 OC have more kinetic energy

In a floral arrangement, the focal area is often

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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?