What is the h in a solution with poh of 0.253?

Consider this initial-rate data at a certain temperature for the reaction described by

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?

What type of context clue you understand the meaning of  quandary?