The volume occupied by one mole of any ideal gas at standard temperature and pressure is

Explanation

At 273 K and 1 atmosphere one mole of any gas occupies 22.4 dm3, which follows from the ideal gas equation and is independent of the identity of the gas. The figure 24 dm3 applies at room temperature, about 298 K, so it is right for a different condition and wrong here. Reading dm3 as cm3 changes the answer by a factor of a thousand.