If you have a volume of 10 mL and a mass of 100kg what is the density (please explain)

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

Which diagram represents the phase tha occurs after a solid melts?