What is the pressure of the gas in this mercury manometer if h = 53 mm and atmospheric pressure is 759 mmhg?

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?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

If two identical atoms are bonded,what kind of molecule is formed