PLEASE HELP ASAP

Draw the functional group found in propylamine

Which best describes how johannes kepler developed his laws of planetary motion

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

Describe the forces both attractive and repulsive that occur as two atoms move closer together.