A.) What is the initial pressure of a gas if it occupied a volume of 375 mL but now occupies a volume of 1.25 L at a pressure of 95.5 kPa? The temperature and chemical amount of the gas remain constant. Give your answer in kPa. B.) A balloon filled with helium gas with a volume of 5.80 L measured at 101.325 is placed into a hyperbaric chamber at a pressure of 1255 mm Hg. Predict the new volume in litersIf the temperature remains constant throughout the process . C.) A balloon is brought to the top of Mt. Everest, where it occupies a volume of 775 mL at a temperature of -28 degrees*C and a pressure of 92.5 kPa. What is the pressure in kPa, at the bottom of mountain the same balloon has a volume of 825 mL at a temperature of 15*C?
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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