d Write one biological importance of element X. 2. One of the postulates of kinetic molecular theory of gas is the volume of a gas molecule is negligible compared to the volume occupied by the gas." a. Explain why this postulate is not applicable for gases under low temperature and high pressure? b. An unknown gas is placed in a 1.5 litre bulb at a pressure of 356 mm Hg and a temperature of 22.5°C, and is found to weigh 0.9847g. What is the molecular mass of the gas7( R-0.0821 I atm mol-' K-) OR (2)​