Which of the following data does a complete and balanced chemical equation not reveal?

the molar ratios of each of the reactants and products

the states of matter for each reactant and product

the correctly written formula for each reactant and product

the mass of each reactant and product

Why is the melting of ice a physical change ?

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 !

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?