Write the expression for this reaction's equilibrium constant in terms of partial pressures. (pressure equilibrium expressions take the general form: kp = pcc / paa . pbb. subscripts and superscripts that include letters must be enclosed in braces {}.)

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

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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 !