How much heat is given off when 16 g liquid methanol (CH3OH) at its freezing point changes to solid methanol? (methanol AH+ = 3.16 kJ/mol)

A. 0.79 kJ
B. 0.18 kJ
C. 1.58 kJ
D. 0.36 kJ

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

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 !

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?