Dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. Calculate (a) the partial pressure of each gas in atm and (b) the concentration of each gas in moles per liter at 0°C.

Q: What is the pressure (in atm) of 0.250 mole of nitrogen gas at 18C in a 7.50 x 10^3 mL container?

A: We have given that   Mole of N2 = 0.25 mole  Temperature (T) = 18 + 273.15 = 291.15 K  Volume (V) =…

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Q: What is the ratio of urms to ump for a sample of O2(g) at 300 K? Will this ratio change as the…

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Q: Lithium  metal reacts with molecular  oxygen  gas to form  lithium   oxide . A closed container of…

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Q: What mass (in g) of NO2 is contained in a 12.8 L tank at 0.830 atm and 269 K?

A: Ideal gas equation relates pressure (P), volume (V), number of moles (n) and temperature (T). PV=nRT…

Q: A compressed gas cylinder of CO2 gas has a volume of 23.5 L at room temperature (25C) and a pressure…

A: Given, volume of CO2 = 23.5 L Temperature  = 25°C = (273+25) = 298 K Pressure = 650 KPa  = 650/101 =…

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Q: At 273 K and 1 atm pressure, 1 mol of an ideal gas occupies 22.4 L. In whichparts of the atmosphere…

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Q: At what temperature (in °C) would one liter of ethene gas, C2H4, have a mass of 1.303 g, if the gas…

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Q: A gas has the following elemental composition: C = 82.7%, H = 17.3% in mass. At stp (room…

A: Given, C = 82.7 % H = 17.3 %  Temperature = 0°C = 273 K Pressure = 760 mmHg = 1 atm Density = 2.496…

Q: At what temperature (in °C) would one liter of ethene gas, C2H4, have a mass of 1.166 g, if the gas…

A: A mole of a substance refers to the mass of that substance which will contain same number of   atoms…

Q: A chemist is investigating the conversion of atmospheric nitrogen to usable form by the bacteria…

A: Given information,    1.25 g of nitrogen gas in a flask of volume 250 mL at 20 °C.         moles of…

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Q: At what temperature does 1.00 atm of carbon dioxide (CO2) gas have the same density as 2.00 atm of…

A: Given: For CO2                PCO2 = 1.0 atm Mass m = 44 g/mol Temperature = ? For He PHe = 2.0 atm…

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Q: The synthesis of ammonia from the elements is conducted at high pressures and temperatures: N2(g) +…

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Q: A bottle contains 1.0 mol He(g) and a second bottle contains 1.0 mol Ar(g) at the same temperature.…

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Q: What is the pressure (in atm) of 0.250 mole of nitrogen gas at 18C in a 7.50 x 103 mL container?

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Q: At what the pressure, in atmospheres, that O2 gas at 75°C has a density of 2.00 g/L?

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Q: By volume, dry air is 78% N2, 21% O2 and 1% Ar. What is the partial pressure of each of these…

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Q: A clean, dry and open empty flask is being heated in a water bath. Under which conditions before or…

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Q: From data gathered by Voyager 1, scientists have estimatedthe composition of the atmosphere of…

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Q: What is a supercritical gas? What is the function of a modifier?.

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Q: What is the density of xenon gas at 750kPa and 25°C?

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Q: P

A:

Q: The gas from a certain volcano had the following composition in mole percent: 65% CO2, 25% H2, 5.4%…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.