A lungful of air (366 cm3 ) is exhaled into a machine that measures lung capacity. If the air is exhaled from the lungs at a pressure of 2.48 atm at 39.2 ◦C but the machine is at ambient conditions of 0.958 atm and 23 ◦C, what is the volume of air measured by the machine? Answer in units of cm3 .

Q: A small 4.49 L oxygen tank is pressurized to 130 atm at 22.31ºC.  What is the mass in grams of…

A: Given that volume of oxygen = 4.49 L Pressure = 130 atm Temperature = 22.31 °C = 22.31 + 273.15 =…

Q: Nitrous oxide (N,O), also known as laughing gas, has uses in surgery and dentistry as an anesthetic.…

A:

Q: Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some…

A:

Q: At 741 Torr and 44°C, 7.10 g of a gas occupies a volume of 5.40 L. What is the molar mass of the gas…

A: Given: Pressure is 741 torr Volume is 5.40 L Temperature is 44oC Mass is 7.10 g To find: Molar mass

Q: A sample of gas at 979.3 mmHg, occupying a volume of 12.17 L, and at a temperature of 26.40 °C is…

A: Given that : The initial pressure of the gas (P1) = 979.3 mm Hg The initial volume of the gas (V1)=…

Q: Linolenic acid (C18H30O2) can be hydrogenated to stearic acid by reacting it with hydrogen gas…

A: The balanced reaction taking place is given as, => C18H30O2 (s) + 3 H2 (g) ---------> C18H36O2…

Q: An unknown gas weights 34.2g and occupies 67 mL at 2.0 atm and 24.5 Celsius. what is its molar mass?

A: Given, Mass of unknown gas = 34.2 g Pressure, P = 2.0 atm Volume, V = 67 mL = 0.067 L    (1 mL =…

Q: Perform the conversions. 970.5 mmHg atm 2.091 atm = Torr 408.4 kPa = atm 1220.6 mmHg Pa =

A:

Q: What volume of carbon dioxide will 4.70 g of antacid made of calcium carbonate produce at 37.0 °C…

A: In this question, we want to determine the Volume of CO2 gas. You can see details Solution below…

Q: A gas mixture containing oxygen, nitrogen, and argon has a total pressure of 881 torr.  What is the…

A: Solution In a mixture of gases, each constituent gas has a partial pressure which is the notional…

Q: At 1.391.39 atm and 22.75 ∘C22.75 ∘C, a 2.772.77 g sample of gas occupies a volume of 15501550 mL.…

A: An ideal gas is an hypothetical gas where the particles are randomly moving with no inter-particle…

Q: Oxygen gas reacts with powdered aluminum according to the following reaction:…

A: The reaction is given below.

Q: A student measures the pressure, volume, and temperature of a gas in the laboratory and records the…

A:

Q: 100cm of a gas diffuses in 15 minutes, when 120cm³ of SO, diffuses in 20 minutes. What is the…

A: 1) unknown gas :-     volume = V1 = 100cm3      time taken = t1 = 15 minutes  2) SO2 gas :-…

Q: Ammonium nitrate is an explosive compound and it decomposes at a high temperature according to the…

A: An ideal gas follows a theoretical concept in which there is no interparticle interaction between…

Q: A sample of ideal gas at room temperature occupies a volume of 15.0 L at a pressure of 752 torr. If…

A: Given, Note: 760 torr = 1 atm Initially: Pressure of a gas (P1) = 752 torr = 0.989 atm Volume of a…

Q: Calculate the volume of chlorine gas (Cl2) at STP that will react with 5.00 grams of

A:

Q: An average pair of human lungs contain about 3.0 L of air after exhalation. Assuming that the air in…

A:

Q: What volume (in liters) is occupied by 4.24×1022 nitrogen molecules at 100 ∘C and 285 mmHg? Express…

A: Given Number of molecules, Temperature and pressure of Nitrogen gas molecules.

Q: A sample of N2O3(g) has a pressure of 0.024 atm. The temperature (in K) is then doubled and the N2O3…

A:

Q: How many grams of CO2 gas are there at 793 torr and 38 oC in a 5.10x104 mL rigid container? Just…

A: To find mass of carbon dioxide

Q: Perform the following conversions: (a) 0.912 atm to torr,(b) 0.685 bar to kilopascals, (c) 655 mm Hg…

A: 1 atm = 760 torr 1 atm = 760 mm Hg 1 atm  = 101325 Pa 1 atm = 1.01325 bar 1 atm = 14.6959 psi a)…

Q: Calculate the density of propane gas at 780 torr and 40 0C.

A: Ideal gas law states that the product of volume (L) and pressure (atm) is equal to the product of…

Q: An unknown gas in a balloon weighs 73.53 g. The balloon occupies 20.00 L at 22.0 °C and 1056 mm Hg.…

A: Given the mass of gas =73.53 gvolume of gas =20.00 Ltemperature =22.0 °C =(22+273) K =295 Kpressure…

Q: What volume of water vapor gas would be produced from the combustion of 574.80 grams of propane…

A:

Q: An anaesthetic gas contains 64.81% carbon, 13.60% hydrogen, and 21.59 % oxygen by mass, If 2.00 L of…

A: Given: Volume of gas = 2.0 L Temperature = 25 oC Pressure = 0.420 atm mass =2.57 g % of carbon =…

Q: To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an…

A: According to the ideal gas law: PV = nRT where P, V, n, R and T represent pressure, volume, number…

Q: What volume is occupied by 16.0 grams of hydrogen at a pressure of 0.895 bar and 293 K?   432 L…

A:

Q: How many grams of methane, CH4 are in a 1,848 mL tank at 104 °C and 319 kPa? Just put in the number.…

A: Using the ideal gas law equation to find moles.  Then using molar mass to find mass of CH4

Q: If carbon dioxide (CO2) requires 55.12 minutes to effuse through a small hole in its container, how…

A:

Q: A lungful of air (363 cm ^ 3) is exhaled into a machine that measures lung capacity . If the air is…

A: According to the ideal gas equation, PV = nRT where, P, V, n, R and T are pressure, volume, number…

Q: What pressure (in atm) is exerted by a column of toluene (C7H8) 87.0 m high? The density of toluene…

A:

Q: If 150 grams of vinegar(HC2H3O2) react with eggshell at 641mmHg and16 o C, what will be the volume…

A: Formula of vinegar = HC2H3O2 Mass of vinegar = 150g  Molar mass of vinegar =…

Q: A sample of gas in a balloon has an initial temperature of 5 ∘C and a volume of 1600 L . If the…

A: Given : Initial temperature = 5oC=5 + 273= 278K Final temperature = 59oC= 59 + 273= 302K Initial…

Q: A lungful of air (359 cm3) is exhaled into a machine that measures lung capacity. If the air is…

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: What volume of O2 at 988 mmHg and 31 ∘C is required to synthesize 13.0 molmol of NO? Express your…

A: Given, the pressure O2 =988 mm Hg =1.3 atmtemperature =31 °C =(31+273.15) K =304.15 Kwe are asked to…

Q: Automobile air bags inflate following a serious impact. The impact triggers the following chemical…

A:

Q: Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. If the…

A: Given: Percentage of oxygen = 20.95% Atmospheric pressure = 749 torr

Q: A flexible vessel contains 28 L of gas where the pressure is 1.8 atm. What will the volume be when…

A: Given: Initial volume of gas (V1)= 28 L Initial pressure of gas (P1) = 1.8 atm Final pressure of gas…

Q: A 1.56 mol sample of O2 gas is confined in a 37.6 liter container at 20.9 °C. If 1.56 mol of H2 gas…

A: Given data : Number of moles of O2 = 1.56 moles Volume = 37.6 L Temperature (T) = 20.9°C = 293.9 K…

Q: The combustion of fuel in your car engine requires oxygen gas, which is supplied as air (21% oxygen…

A: Given data : Volume of air = 2.71 L          Pressure = 1 atm          Temperature = 25°C = 298 K…

Q: At what temperature in degrees Celsius will 5.00g cl^2 gas exerts a pressure of 2.55atm and occupies…

A: T = 3034.8 0C

Q: The combustion of octane, C8H18, proceeds according to the reaction shown.…

A: From the balanced equation, it is clear that two moles of octane react to give 16 moles of carbon…

Q: Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. If the…

A:

Q: What is the density of air at 762 mmHg and 32°C? the molar mass of gases in air is 29g/mol.( please…

A: The density of a gas can be calculated by using the ideal gas equation. The ideal gas equation is…

Q: What volume of carbon dioxide will 2.20 g of antacid made of calcium carbonate produce at 37.0 °C…

A: Given data contains, Grams of Calcium carbonate is 2.20 g. Temperature is 37°C=37+273 K=310 K.…

Q: Assuming that a 1.5 g gas occupying a volume of 500 ml at a pressure of 1.75 atm and a temperature…

A: Given: Mass of gas = 1.5 g. Volume of gas = 500 mL = 0.500 L…

Q: A lungful of air (382 cm) is exhaled into a machine that measures lung capacity. If the air is…

A:

Q: Calcium carbonate decomposes due to the effect of temperature producing calcium oxide and carbon…

A: Given: Mass of calcium carbonate i.e CaCO3 decomposing = 3.1 g Volume of cylinder = 1.45 L And…

Q: An unknown gas has a density of .355g/L at 17 celsius and 189mm Hg. Calculate the molar mass of the…

A: Since density = mass / volume  Hence mass of gas = density X volume = 0.355 V hence moles of gas =…

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.