Water is a substance that you commonly encounter as a solid, a liquid, and a gas. Explain how the conditions in the environment make this possible… HELP THIS IS FOR TODAY

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

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?