HELPPP 1. How much energy is released when 500 g of 373 K vapor condenses into liquid water?

2. How many joules of energy are needed to melt 500 g of water to its freezing point?

3. If 5,100 joules of heat are released when a freezing sample is frozen, what is the mass of the water?

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 !