Aconcentrated phosphoric acid solution is 85.5% h3po4 by mass and has a density of 1.69 g/ml at 25°c. what is the molarity of h3po4? what is the mole fraction of urea, co(nh2)2, in a solution prepared by dissolving 5.6 g of urea in 30.1 g of methanol, ch3oh? how will an understanding of this concept you in your healthcare career?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?