For a first-order reaction, the initial reactant concentration is 0.722 M. After 48.5 min, the concentration is 0.501 M. What is k in min-1?

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

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 is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added