The atmospheric pressure on the top of Mt. Everest, an altitude of 8850 m, is only 0.35 X 105 Pa. What is the partial pressure of oxygen in the lungs at this altitude (assuming that the percent O2 is the same as in dry air)?

Q: What is the mole fraction of nitrogen in a mixture of Ar, N2, and He in which the partial pressure…

A:

Q: What is Boyle's law constant if a sealed rigid container with a volume of 500 mL has a pressure of…

A: Boyle's Law isPV= k at constant temperature where P= Pressure of gasV= Volume of gask= Boyle's law…

Q: What is the pressure in a 9.00L tank with 27.1 grams of fluorine gas at 355 K?

A: We will first calculate the number of moles of the fluorine, then calculate pressure using ideal gas…

Q: Why would it be impossible to breathe air through an extra-long snorkel (greater than a couple of…

A:

Q: What is the equivalent of 6.2 x 104 ppm in %w/v ?

A: Parts per million(ppm) can be expressed as millligrams per litre of solution . %w/v can be expressed…

Q: A gas In a bulb registers a pressure of 833 mm Hg in The manometer in which the reference arm of the…

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Q: 4. A 34.0-L cylinder contains 305 g of oxygen gas at 22°C. How many grams of gas must be released to…

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Q: Humid air on a warm summer day is approximately 20% oxygen, 75% nitrogen, 4% water vapor, and 1%…

A: we have PV = nRT , hence volume is proprotional to moles of gas hence mol % of gases are O2 = 20 % ,…

Q: A sample of lead glass is prepared by melting together 20.0g silica , SiO2 and 80.0g of lead (II)…

A:

Q: 6. What is the mole fraction of calcium chloriIde in 3.35 m CaCl, (aq)? The molar mass of CaCl, is…

A: Given: Molality of CaCl2 = 3.35 m Molar mass of water = 18.02 g/mol

Q: What is the partial pressure of the grey gas in the container below, given that the total pressure…

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Q: What mass of Carbon Dioxide will exert the same pressure as 12.5 g of ammonia at the same volume…

A: # We are given that we have same condition for both gases that is same volume, temperature and…

Q: The pressure inside a hydrogen-filled container was 213 kPa at 21 °C. What would the pressure be if…

A: Given: Initial pressure       = 213 kPa Initial temperature = 21 oC Final temperature  = 99 oC

Q: Everything needed is provided. A cylinder with a volume of 50.0 L contains a mixture of argon and…

A: Given : mole fraction of H2 gas in cylinder = 0.10  Total pressure of gaseous mixture = 120 atm…

Q: Calculate the volume of dry co2 produced at body temperature (37 ∘c) and 0.970 atm when 25.5 g of…

A: The formation of carbon dioxide from the glucose is shown below. C6H12O6 (aq) + 6O2(g) → 6CO2(g) +…

Q: What is the temperature (in K) of 0.325 mole of neon in a 2.00 L vessel at 4.68 atm?

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Q: If there is 25.0g of CO2 gas in a 10.0 mL cylinder at 5 degree celsius, what is the gas pressure…

A: If there is 25.0g of CO2 gas in a 10.0 mL cylinder at 5 degree Celsius, the gas pressure within the…

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 =…

Q: O2 molecules and the vapor pressure of water at body temperature (37 °C) is 47 mm Hg. Taking the…

A: Given data: Vapour pressure of of water (Pvapor) = 47 mm Hg Total barometric pressure (Ptotal) = 621…

Q: .What is the temperature of gas, in K, that is expanded from 2.5 L at 25 C to 4.0 L at constant…

A:

Q: A mixture of neon and methane gases contains neon at a partial pressure of 406 mm Hg and methane at…

A: Relation between Mole fraction and Partial pressure:  χA = nAnT = PAPT

Q: What is the new temperature (in K) of a closed gas system, when its volume is compressed from 5.6 L…

A: Given that: initial volume, V1 =  5.6 L final volumeV2 = 2.3 L initial temperature, T1 =  455 K To…

Q: 4. A sample of hydrogen is collected by displacing a sample of water with a temperature of 35°C. The…

A: Given Total pressure of mixture = 114 kPa

Q: What is the mole fraction of commercial Concentrated hydrofluoric acid which is 55.0% HF by mass?

A: The concentration of the hydrofluoric acid is = 55.0% (by mass) The molar mass of HF is = 20.01…

Q: The total pressure exerted by air at 2000 m above sea level is 596 mm Hg. The nitrogen gas (N2)…

A: Dalton’s law is applicable to calculate any gas’ partial pressure present in given gaseous mixture.…

Q: Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 255.0 mg of…

A: Here we can apply the gas equation to find the moles of organic compound used. Moles n = PV / RT…

Q: What is the temperature (in K) of 0.435 mole of neon in a 2.00 L vessel at 4.68 atm?

A:

Q: What is the temperature (in K) of 0.450 mole of neon in a 2.00 L vessel at 4.68 atm?

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: If an ideal gas initially at 0.8 bar and 1.7 L is compressed at constant temperature to a volume of…

A: An ideal gas initially at 0.8 bar and 1.7 L is compressed at constant temperature to a volume of 0.9…

Q: What volume is occupied by 0.781 mol of CO2 at 237.5 K and 977 mmHg?

A: Write down what information is given to you

Q: What is the temperature (in K) of 0.840 mole of neon in a 2.00 L vessel at 4.68 atm?

A:

Q: A sample of hydrogen is collected by displacing a sample of water with a temperature of 35C. The…

A: According to Dalton law of partial pressure recall the following expression…

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…

Q: 5. An engineer pumps 5.00 mol of carbon monoxide gas into a cylinder that has a capacity of 20.0 L.…

A: The pressure of an ideal gas will be directly proportional to the temperature of the gas and…

Q: What is the ratio of urms to ump for a sample of O21g2 at 300 K? Will this ratiochange as the…

A: Calculate  μrms  (root mean square) as follows. In the expression, R is universal gas constant, T is…

Q: V/hat is the partial pressure of carbon dioxide,

A: Given : Total atmospheric pressure (ptotal) = 675 torr              Vapor pressure of water (pH2O) =…

Q: A 3.85 g sample of a KCl−KClO3 mixture is decomposed by heating and produces 117 mL O2(g), measured…

A: Given, V = 117 mL = 0.117 L as 1 mL = 0.001 L T = 23.5 + 273 = 296.5 K P = 110 kPa The value of R is…

Q: What is the new pressure exerted by sulfur dioxide if a sample of 1.53 liters of sulfur dioxide at a…

A: Boyle's law is important because it tells us about the behavior of gasses. It explains, with…

Q: 3.19K HI B. What mass of aluminum metal must be dissolved in excess hydroiodic acid to pro L of…

A:

Q: For air at 25 °C (77 °F) with 100% humidity, what is the partial pressure of oxygen (PO2)?

A: Given Air with 100% humidity at 25 °C.

Q: How many moles of a gas mixture would be needed to provide 0.555 mole O2, if the mole fraction of O2…

A:

Q: Elemental analysis of an organic liquid with a fishy odour gives the following elemental mass…

A: Given: Pressure = 435 torr = 0.572 atm Temperature = 150 oC = 423 K Volume = 150 mL mass of impure…

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

A: Given: Number of moles of NH3= 13 mol Number of moles of N2= 31 mol Number of moles of H2=93 mol The…

Q: A mixture of hydrogen and nitrogen gases contains hydrogen at a partial pressure of 300 mm Hg and…

A: We know that  Partial pressure of gas = mole fraction × total pressure That is  pg = Xg × P and also…

Q: A diver breathes a helium and oxygen mixture with an oxygen mole fraction of 0.050. What must the…

A: Mole fraction of the oxygen gas = 0.050 Partial pressure of the oxygen gas = 0.20 atm

Q: What pressure is required to allow 1.9L of He at 1 bar pressure to expand to 6.7L?

A: The Final Pressure is 0.28 bar

Q: Calculate the mass of water vapour present in a room of volume 400 m3 that contains air at 27 °C on…

A: It is given that a room has a volume of 400 m3 and has a temperature of 27°C and the humidity…

Q: Mass of a vacuumed (empty) vessel of volume 5 L is 640.05 g, and mass of the same vessel filled with…

A: Number of moles of hydrocarbon can be determined using Ideal Gas Equation as follows,

Q: What is the mole fraction of oxygen in a mixture of N2, O2, and Ar in which the partial pressure of…

A: First find the partial pressure of O2.

Q: How many grams of ammonia will exert the same  pressure as 28 mg of hydrogen sulfide, H2S, in the…

A:

Q: What is the temperature (in K) of 0.820 mole of neon in a 2.00 L vessel at 4.68 atm?

A:

Q: Calculate the height of a column of liquid glycerol (d= 1.26 g/em³), in meters, required to exert…

A:

Q: What is the temperature (in K) of 0.865 mole of neon in a 2.00 L vessel at 4.68 atm?

A: Given that : The number of moles of Ne = 0.865 moles Volume = 2 L Pressure = 4.68 atm We have to…

Q: What is the pressure/temperature ratio of 100. molecules in 10. nm at 300. K? 0.0388 atm/K 0.0333…

A: The answer to the following question is-

Q: Mass of a vacuumed (empty) vessel of volume 5 L is 640.05 g, and mass of the same vessel filled with…

A: Number of moles of hydrocarbon can be determined using Ideal gas Equation as follows,

Q: Hyperbaric oxygen chambers providing pure oxygen (O2) at pressures greater than 1 atm are used to…

A: Answer :-  The pressure in the chamber = 1.528 atm…

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg

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.