Identify the solutes and solvents for the following solutions: • salt (NaCl) in water, • air (a solution of 78% N2, 21% O2, and various other gases) • a solution of 30% ethanol and 70% water, • steel (an alloy of 95% iron and 1.5% carbon and 3.5% manganese) • CO2(g) in water. O2, water, NaCl, N2,carbon, co2,iron, ethanol

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.