A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of about 300 L of this CO2-enriched and H2O-enriched air. (a) If the partial pressures of CO2 and H2O in exhaled air are each 30.0 torr at 37.0°C, calculate the mass (g) of CO2 and of H2O exhaled in 1 h of sleep. (b) How many grams of body mass does the person lose in an 8-h sleep if all the CO2 and H2O exhaled come from the metabolism of glucose?                        C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(g)

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

A:

Q: Some indoor air-purification systems work by converting a little of the oxygen in the air to ozone,…

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Q: A mixture of Ne and Ar gases at a PT of 1.4atm. If there are twice as many mols of Ne as Ar, what is…

A: The mixture contains Ne and Ar in the ratio 2:1. Hence, mole fraction of Ar can be given as below,

Q: A 6.0-L flask contains a mixture of methane (CH4), argon, and helium at 45oC and 1.75 atm. If the…

A: Given information, A 6.0-L flask contains a mixture of methane (CH4), argon, and helium at 45oC and…

Q: A sample of phosphorus that weighs 3.243 × 10−2 g exerts a pressure of 31.89 kPa in a 56.0-mL bulb…

A:

Q: Acetylene gas can be produced by slowly reacting calcium carbide with water. CaC2(s) + 2H2O(l) ➡…

A: Given :  The given chemical reaction is  CaC2(s) + 2H2O(l) ➡ C2H2(g) + Ca(OH)2(s)   Mass of CaC2 =…

Q: What is the pressure inside a 250 mL stoppered flask that contains 0.040 mol of NH3(g) at 15 °C?

A:

Q: A 1.00 L flask is filled with 1.05 g of argon at 25 ∘C. A sample of ethane vapor is added to the…

A: The molar mass of argon is 39.948 g/mol. The number of moles (n) of argon is calculated below.

Q: (ii) What is the partial pressure of oxygen and nitrogen (in kPa) if they are present at 6.42 mol/m3…

A:

Q: Suppose you are given two 1-L flasks and told that one contains a gas of molar mass 30, the other a…

A: From ideal gas equation,

Q: The total pressure of a mixture of gases is 0.486 atm. If the mole fraction of helium in the mixture…

A: The partial pressure of a gas  is equal to the total pressure (a mixture of gases) multiplied by the…

Q: What is the mole fraction of O2 in a gas mixture with a total pressure of 750 torr when the partial…

A: Given,The total pressure = 750 torr,The partial pressure is 125 torr.

Q: A mixture of neon and argon gases exerts a total pressure of 690.4 kPa.If the partial pressure of…

A: Given:Total pressure of gas mixture, Pt=690.4kPaPressure of Neon gas, PNe = 3214.8mm HgTo…

Q: A mixture of 2.81 moles of H2, 2.57 moles of NH3, 2.65 moles of CO2, and 4.55 moles of N2 exert a…

A:

Q: What will the total pressure be in a 2.50L flask at 25 degrees Celcius if it contains 0.016 mol of…

A:

Q: A mixture of hydrogen and helium gases contains hydrogen at a partial pressure of 526 mm Hg and…

A:

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: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

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Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: A canister of oxygen gas is compressed from 68.0 mL at standard pressure to 19.0 mL. What is the new…

A: apply Boyel law for the given question  Boyel law is ,at constant temperature , PV = constant  or…

Q: What is the pressure in kilopascals of 1.926 x 10-6 moles of helium gas, if it occupies a volume of…

A: Ideal behaved gas and pressure calculation using ideal gas equation

Q: A mixture of gases contains 0.200 mole O2, 0.400 mole N2, and 0.600 mole H2 at 2.00 atm pressure.…

A: It is an example of application of Dalton law

Q: What is the volume occupied by a mixture of 0.386 mol of N2 and 0.386 mol of O2 gases at 1.04 atm…

A: The total number of moles of the gas in a mixture is expressed as the sum of the moles of the…

Q: what volume in liters of ammonia at 25 degrees celsius and 1.50 atm is needed to produce 525 g of…

A: "Ideal gas law" is related to pressure (atm), volume (liter), moles (mol), gas constant…

Q: The partial pressures of CH 4, N 2, and O 2 in a sample of gas were found to be 135 mmHg, 508 mmHg,…

A: Given : Partial pressure of CH4 = 135 mm Hg Partial pressure of N2 = 508 mm Hg And partial pressure…

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: Carbon dioxide gas is collected in a laboratory experiment to determine the molar mass of the…

A: For experimental molar mass calculation use ideal gas equation PV = nRT  P = pressure  V = volume n…

Q: Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 275.0 mg of…

A: Given:Mass of compound = 275.0 mg = 275.0 ×10-3 g.Volume of Solution = 110 mL = 110×10-3…

Q: 4. How many grams of carbon dioxide gas do you have if the gas is exerting a pressure of 2.1atm at…

A:

Q: If the atmosphere is 25 degC and 1.2 atm and contains 0.79 mole fractions of N2, 10-S mole fractions…

A: Given that : Pressure of the atmosphere = 1.2 atm Mole fraction of N2 = 0.79 Mole fraction of the…

Q: In a system for separating gases, a tank containing a mixtureof hydrogen and carbon dioxide is…

A: Partial pressure = mole fraction × total pressure

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: A mixture composed of 60%CO2 and 40%He by volume analysis is contained at 0.5MPa. What is the…

A:

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

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles  R = gas constant =…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: Components of Air Mole Fraction Nitrogen 0.781 Oxygen 0.209 Argon 0.010 What is the partial pressure…

A: In this question, we will determine the partial pressure of Argon in torr unit.  You can see the…

Q: When 0.1 mol of HCl gas is placed in a 10 liter box at 25 degree C, the pressure is about the same…

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Q: Carbon dioxide gas is collected in a laboratory experiment to determine the molar mass of the…

A: For CO2 gas, Temperature, T = 294 K Pressure, P = 1.01 atm Mass, m = 1.008 g Volume, V = 500 mL =…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: Answer: When hydrogen gas is collected over HCl, solution it would also be containing water vapor in…

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: 1. Calculate the volume of carbon dioxide adjusted to 25 °C and 1 atm, that plants need to make 1.00…

A:

Q: 5.79 ® The gas from a certain volcano had the following com- position in mole percent (that is, mole…

A:

Q: A balloon contains 0.0475 mol He, 0.0252 mol H2, 0.771 mol N2, and 0.270 mol O2. The total pressure…

A:

Q: What is the density of carbon dioxide gas (CO 2, 44.01 g/mol) at 25°C and 650 mm Hg?

A:

Q: Let 9.642 g He, 9.768 g F2, and 9.218 g Ar be placed in a 19.2-L container at 75°C. What are the…

A: Given, Let 9.642 g He, 9.768 g F2, and 9.218 g Ar be placed in a 19.2-L container at 75°C. The molar…

Q: 3. What is the temperature of 1.2 moles of Helium gas at 1950 mm Hg if it occupies 15,500 ml of…

A: Combine Gas law of ideal gas -PV = nRTwhou volume of n mol of gas is V at pressure P andtemperature…

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

A: According to Dalton's law of partial pressure the total pressure of a gaseous mixture is the sum…

Q: The total pressure exerted by a mixture of He, Ne, and Ar gases is 2.00 atm. What is the partial…

A: Dalton's law ( also called Dalton's law of partial pressure) that  in a mixture of non reacting…

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.