Asample of gas has an initial volume of 4.5 l at a pressure of 754 mmhg . part a if the volume of the gas is increased to 8.5 l , what will the pressure be? express your answer using two significant figures.

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .