Atomic mass of Oxygen atom is 16 amu. Molecular mass of O2 us 32 amu. Mass of O2 gas is 32 grams / mole. Mass of O2 gas is 1.428 grams/litre at STP. Views Â· View Upvotes.
At vaporâliquid equilibrium, a liquid with individual components in certain concentrations will have an equilibrium vapor in which the concentrations or partial pressures of the vapor components have certain values depending on all of the liquid component concentrations and the temperature.
The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied. Every substance has a critical temperature. Some examples are shown below. The critical pressure of a substance is the pressure required to liquefy a gas at its critical temperature.