Acomputer program that shows all possible planetary orbits

What three things determine the shape and size of a puddle when water is poured out onto a surface

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?