When the barometric pressure was 80 mm Hg a sample of O2 was collected over water at 39.4 Celsius. The volume of the gas collected over the water was 2.94 L. Explain what would the volume of dry O2 be at the 760 mm Hg and 0 Celsius? Where the vapor pressure of water at 39.4 Celsius is 54.0 mm Hg.