Definition. The partial pressure of a given gas is defined as the pressure exerted by that gas alone. For example, consider the gaseous mixture of oxygen, nitrogen, carbon dioxide, and water vapor, the typical mixture found in alveolar gas.
From Wikipedia, the free encyclopedia. Philadelphia County is a county located in the commonwealth of Pennsylvania. At the 2010 census, the population was 1,526,006, making it the most populous county in the state, despite being the second smallest county in the state by land area.
Dutchess County, New York. Dutchess County is a county located in the southeastern portion of the U.S. state of New York. As of the 2010 census, the population was 297,488. The county seat and largest city is Poughkeepsie. The county was created in 1683 and later organized in 1713. Dutchess County is part of the New York-Newark-Jersey City, NY-NJ-PA Metropolitan Statistical Area. It is located in the Mid-Hudson Region of the Hudson Valley.