The pressure percentages in Table 10.4 are essentially mole fractions. For example, the mole fraction of oxygen gas at sea level is 0.20948. Determine its partial pressure (in torr). For significant figures purposes, air pressure at sea level is 760 torr. Fill the unit in the 2nd blank. Type your answer here Write your response here... (unit)
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
Introduction
The ratio of the partial pressure of a given gas to the overall pressure exerted by the gaseous mixture is the mole fraction of that gas in a mixture of gases. When the entire number of moles in the mixture is known, this mole fraction can also be used to determine the total number of moles of a constituent gas.
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Find = Partial Pressure
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