From a laboratory process designed to separate magnesium chloride [MgCl2] into magnesium metal [Mg] and chlorine gas [Cl2], a student collected 35.45 grams of chlorine and 12.15 grams of magnesium. How much magnesium chloride salt (in grams) was involved in the process?

you didnt put any of the following

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.  

i only know number one that’s a galaxy