What mass of nitrogen is contained in 100. L of NO(g) measured at STP? B. The mole fraction of oxygen in air is 0.209. Assuming nitrogen is the only otherconstituent, what are the partial pressures (in torr) of oxygen and nitrogen when thebarometer reads 755 torr? C. A mixture of 2.0 x 1023 molecules of N2(g) and 8.0 x 1023 molecules of CH4(g) exerts a total pressure of 740 mmHg. What is the partial pressure (in mmHg) of N2(g)? D. . A mixture of 50.0 g of O2(g) and 50.0 g of CH4(g) is placed in a container under a pressureof 600 mmHg. What is the partial pressure (in mmHg) of O2(g) in the mixture? E. A mixture of 8.0 g of CH4(g) and 8.0 g of Xe(g) is placed in a container and the totalpressure was found to be 0.44 atm. Find the partial pressure (in atm) of CH4(g).
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.
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A. What mass of nitrogen is contained in 100. L of NO(g) measured at STP?
B. The mole fraction of oxygen in air is 0.209. Assuming nitrogen is the only otherconstituent, what are the partial pressures (in torr) of oxygen and nitrogen when thebarometer reads 755 torr?
C. A mixture of 2.0 x 1023 molecules of N2(g) and 8.0 x 1023 molecules of CH4(g) exerts a total
pressure of 740 mmHg. What is the partial pressure (in mmHg) of N2(g)?
D. . A mixture of 50.0 g of O2(g) and 50.0 g of CH4(g) is placed in a container under a pressureof 600 mmHg. What is the partial pressure (in mmHg) of O2(g) in the mixture?
E. A mixture of 8.0 g of CH4(g) and 8.0 g of Xe(g) is placed in a container and the totalpressure was found to be 0.44 atm. Find the partial pressure (in atm) of CH4(g).
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