The energy levels the electron can occupy in the H atom can be calculated using the energy level equation. A H atom absorbed a photon with a frequency of 3.15 × 1015 Hz to reach an energy level with n=5. What was the value of n for its initial energy level?

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;