Calculate the density of a 480 g rectangular block with the following dimensions: length=8 cm, width=6 cm, height=5 cm. (answer = 2.0 g/cm3)

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 !

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar