What did you observe about the sample of the pipe substance?

Please help

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 !

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?