the partial pressures of each gas. (d) If 1 mole of CH, gas at STP is added to 22.4 L of N, at STP, the final pressure in the 22.4 L con- tainer will be 1.00 atm. nt- 46 The three main components of dry air and the percent- age of each are nitrogen (78.08%), oxygen (20.95%), and argon (0.93%). (a) Calculate the partial pressure of each gas in a sample of dry air at 760 mm Hg. (b) Calculate the total pressure exerted by these three gases combined. ,47 Air in the trachea contains oxygen (19.4%), carbon di- oxide (0.4%), water vapor (6.2%), and nitrogen (74.0%). If the pressure in the trachea is assumed to be 1.0 atm, what are the partial pressures of these gases in this part of the body? 48 The partial pressures of a mixture of gases are as follows: oxygen, 210 mm Hg; nitrogen, 560 mm HgB
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.
#46 is the problem I need help with. How do you find the partial pressure of each with the percentages? Do you use Pt=P1+ P2+P3....?
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