Suppose you start out with only reactants. the initial partial pressure of N2(g) is 0.675 atm and that of O2(g) is 0.472 atm. what are the partial pressure of each gas when the system reaches equilibrium?

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 !