1. If an ideal gas has a pressure of 1.63 atm, a temperature of 27.99 ∘C, and a volume of 56.73 L, how many moles of gas are in the sample? 2.If 3.01 mol of an ideal gas has a pressure of 2.72 atm and a volume of 72.45 L, what is the temperature of the sample in degrees Celsius? A 8.45 L container holds a mixture of two gases at 41 °C. The partial pressures of gas A and gas B, respectively, are 0.164 atm and 0.521 atm. If 0.150 mol of a third gas is added with no change in volume or temperature, what will the total pressure become? 3. A 2.85 g sample of an unknown gas at 21 ∘C and 1.10 atm is stored in a 1.35 L flask. What is the density of the gas? density: g/L What is the molar mass of the gas? molar mass: g/mol 4. A sample of an ideal gas at 1.00 bar and a volume of 1.70 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 15.0 bar, what was the volume of the sample? Assume that the temperature was held constant. V= 5. A certain mass of nitrogen gas occupies a volume of 4.17 L at a pressure of 8.65 atm. At what pressure will the volume of this sample be 6.55 L? Assume constant temperature and ideal behavior.
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.
a temperature of 27.99 ∘C, and a volume of 56.73 L, how many moles of gas are in the sample?
2.If 3.01 mol of an ideal gas has a pressure of 2.72 atm and a volume of 72.45 L, what is the temperature of the sample in degrees Celsius?
A 8.45 L container holds a mixture of two gases at 41 °C. The partial pressures of gas A and gas B, respectively, are 0.164 atm and 0.521 atm. If 0.150 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?
3. A 2.85 g sample of an unknown gas at 21 ∘C and 1.10 atm is stored in a 1.35 L
flask.
What is the density of the gas?
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