be sure to answer all parts.which forces are intramolecular and which intermolecular?(a) those preventing oil from evaporating quickly at room temperature:intermolecularintramolecular(b) those preventing butter from melting in a refrigerator:intermolecularintramolecular(c) those allowing silver to tarnish:intermolecularintramolecular(d) those preventing o2 in air from forming o atoms:intermolecularintramolecular