In a perfect gas all collisions between atoms or molecules are perfectly elastic and there are no intermolecular attractive forces. many common gases behave as a perfect or ideal gas at room temperature and pressure. the ideal gas law relates the pressure, volume, and temperature of a known amount of gas. which equation represents the pressure-volume-temperature-mole relationship of an ideal gas? a) (p1/t1)=(p2/t2) b) (p1v1/t1)=(p2v2/t2) c) p1v1=p2v2 d) pv=nrt