The specific heat of mercury is 380 j/kg/k. how much energy is required to raise the temperature of 42g of mercury from 25°c to 39°c?

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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 !