1. A certain amount of gas has a volume of 5000ml. at 760mmHg. What will its volume be if the pressure in increased to 790mmHg at constant temperature? 2. A gas occupies 15.3 liters at a presnure of 0.076 atm. What is the vohume when the pressure is increased to 0.098atm? 3. Determine the prennure change when a conntant volume of a gan at 3.0 atm if heated from 15'C to 45'C. 4. A gas occupies 0.78L at 37'C. What in the volume at 175"C? 5. A 3.5 L sample of a gan in collected at a pressure of 2.00 atm. Calculate the pressure needed to reduce the volume of the gas to 3.0 L. the temperature is constant.
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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