To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configuration with numbers, letters, and superscripts? when the aim is to use less space when the aim is to show electron spins when the aim is to show orbital shapes in subshells when the aim is to show electron distributions in shells

Air can be considered a mixture. which statement does not explain why?

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !