True or false: The formula N2H4(l) is not written in proper form; this molecule formula must be reduced to NH2(l).

What material does not melt at any temperature

Is a pencil falling to the floor anon contact force, a force, or a contact force

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.