A gas of unknown molecular mass was allowed to effusethrough a small opening under constant-pressure conditions.It required 105 s for 1.0 L of the gas to effuse. Underidentical experimental conditions it required 31 s for 1.0 Lof O2 gas to effuse. Calculate the molar mass of theunknown gas. (Remember that the faster the rate of effusion,the shorter the time required for effusion of 1.0 L; inother words, rate is the amount that diffuses over the timeit takes to diffuse.)

Q: A sample of gas CH4 is observed to effuse through a pourous barrier in 7.53 minutes. Under the same…

A: The formula which relates time to effuse for a gas and molecular mass is shown below: Time for gas…

Q: Methane gas, CH4, effuses through a barrier at a rate of 0.862 mL/minute. If an unknown gas effuses…

A:

Q: A plastic bag is weighed and then filled successively with two gases, X and Y. The following data…

A: Given data contains: Temperature is 0.0°C (273 K)Pressure is 1.00 atmosphereMass of empty bag is…

Q: A plastic bag is weighed and then filled successively with two gases, X and Y. The following data…

A: A plastic bag contains two gases X and Y . the given conditions are : Temperature = 0.0°C (273 K)…

Q: If 5 mol of oxygen gas effuses through an opening in 10 seconds, how long will it take for the same…

A: * Moles of Oxygen gas (O2) = 5 mol     Moles of oxygen and Hydrogen are same.  * Moles of Hydrogen…

Q: The rate of effusion of N, to an unknown gas is 0.756, what is the molar mass of the other gas?…

A: We have to find mass of unknown

Q: It takes 169 s for an unknown gas to effuse through a porous wall and 97 s for the same volume of…

A: It is given that an unknown gas takes 167 seconds to effuse and nitrogen gas takes 97 seconds to…

Q: At what pressure does the mean free path of Argon at 298K become comparable to the size of a 1.000 L…

A:

Q: Gas X effuses through a pinhole at a rate of 4.73 × 104mol/s. Methane gas, CH4(g), effuses through…

A:

Q: What is the ratio of effusion rates for the lightest gas, H₂, andthe heaviest known gas, UF₆?

A: Molar mass of H2 gas =2.00 g/mol Molar mass of UF6 gas =352.02 g/mol

Q: It takes 161 s for an unknown gas to effuse through a porous wall and 97 s for the same volume of N2…

A: rate of effusion is inversely proportional to the  under root of molecular mass. And directly…

Q: At a certain temperature and pressure, the rate of effusion of N2 gas is 30.0 mL/minute. What is the…

A: According to Graham's law , the effusion rate of any gas is inversely proportional to the square…

Q: 2.076×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 92.9 s. A) Under…

A: According to Graham's Law of diffusion, the rate of diffusion of a gas through a narrow space is…

Q: ´A gas of unknown molecular mass was allowed to effuse through a small opening under…

A: Given, a gas of unknown molecular mass was allowed to effuse.Volume effused of unknown gas =1.0…

Q: If He and Ne are allowed to effuse simultaneously, what will be the rate of effusion of He to Ne. O…

A:

Q: 2.07x103 mol of an unknown gas effuses through a tiny hole in 217.25 s. Under identical conditions,…

A: The rate of effusion of the gaseous substance is inversely proportional to the square root of its…

Q: Given two gas samples: one of N2 and one of He. If the two samples are at the same temperature,…

A: Given gases: N2 and He These gases are kept at the same temperature. The rate of effusion has to be…

Q: At constant pressure, the mean free path 1l2 of a gas moleculeis directly proportional to…

A: Let the mean free path be ƛ, temperature be T, Pressure be P and diameter be d. At constant…

Q: If a gas effuses 4.25 times faster than iodine gas (I2), what is its molar mass?

A:

Q: Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of…

A: Bulb A: 100. mL of H2S(g) at 190. torrBulb B: 200. mL of He(g) at 1.00 atmBulb C: 500. mL of N2 (g)…

Q: the same barrier. The molar mass of the unknown gas is ____g/mol.

A: We have to find molar mass of the unknown gas

Q: In kinetic molecular theory, what are at least two assumptions that describe an ideal gas?

A: Kinetic Molecular Theory of Gases (KMT) is used to describe the behavior of gases.

Q: A sample of neon gas effuses through a pinhole at a rate of 0.49 mL/s. What will be the rate of…

A:

Q: a.) What are the relative rates of effusion of CH4 and He? b.) If these two gases are simultaneously…

A: Graham's Law of Diffusion and Effusion: This law states that the rate of diffusion or effusion (r)…

Q: 2.07x10-3 mol of an unknown gas effuses through a tiny hole in 217.25 s. Under identical conditions,…

A: (a) Given  moles of unkown gas =2.07×10-3molTime of effusion =217.25 smolar mass =m gm/mol   moles…

Q: A sample of SO2 gas is observed to effuse through a pourous barrier in 3.70 minutes. Under the same…

A: Given- Rate of effusion of SO2 gas = 3.70 min Rate of effusion of unknown gas = 1.66 min   To find-…

Q: A gas of unknown molecular mass was allowed to effusethrough a small opening under constant-pressure…

A: Since rate is inversely proportional to time. Also the rate is inversely proportional to root of…

Q: A sample of unknown gas and N2 are allowed to effuse from the same apparatus. The unknown gas…

A: The given problem is based on the Graham's Law of Effusion. This law is states that the rate of…

Q: If a gas effuses 4.25 times faster than iodine gas (12), what is its molar mass?

A: Given that:  Gas effuse 4.25 times faster than iodine gas Let rate of effusion of iodine gas = R1…

Q: How can comparing the rates of effusion of gases X and Y allow the molar mass of Y to be calculated?…

A:

Q: If 0.814 moles of NH3 effuses in 856 seconds, how many seconds will it take for the same number of…

A: The rate of NH3 = 0.814/856  The rate of CH3CI = 0.814/s

Q: The rate at which argon, (Ar) effuses through pinhole is 4.5 ml/min. At what rate will the hydrogen…

A: Relation between rate of effusion and molar mass of gases: R2/R1 = (M1/M2)1/2 Where,  R1 =  rate of…

Q: A gas cylinder contains 2.45 mol He , 1.85 mol Ne , and 1.60 mol Ar . If the total pressure in the…

A: It is given, 2.45 mol He , 1.85 mol Ne , and 1.60 mol Ar So, total number of moles = 2.45 + 1.85 +…

Q: What volume does 12.5 g of argon gas at a pressure of 1.05 atmand a temperature of 322 K occupy?…

A: Ideal gas equation The equation that gives the relationship between pressure, volume and temperature…

Q: 1.734×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 93.2 s. A) Under…

A: According to Graham's law of effusion, the rate of effusion of a gas is inversely proportional to…

Q: Neon effuses at a rate of 0.325 moles per second at certain volume, pressure, and temperature. How…

A:

Q: There is 2.878 x 10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 98.9…

A: According to Graham's law of diffusion, the rate of diffusion is inversely proportional to the…

Q: Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of…

A: Given: The volume and partial pressure of gases in the bulbs given are, Bulb A: 100 mL or 0.100 L of…

Q: There is 2.878 x 10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 98.9…

A: Effusion is the process by which any gaseous substance is escaped from a large system through a tiny…

Q: A sample of unknown gas and N2 are allowed to effuse from the same apparatus. The unknown gas…

A: Given, Rate of effusion of N2 = 9.55 m/s Rate of effusion of unknown gas = 5.45 m/s Molar mass of N2…

Q: A sample of N2O effuses from a container in 42 seconds. How long will it take the same amount of…

A: the rate of effusion is guided by many factors.rateN2OrateI2=MI2MN2Owhen container is same, the…

Q: An unknown gas effuses 1.66 times more rapidly than CO2. What is the molar mass of the unknown gas?…

A: Graham's law of effusion: According to Graham's law of effusion the rate of effusion of a gas is…

Q: A given volume of oxygen, O2, required 62.0 seconds to effuse from a hole in a chamber. Under the…

A: The formula which relates time to effuse for a gas and molecular mass is shown below: Time for…

Q: The Density of a gas was measured at 1.50 atm and 27°C and found to be 1.95 g/L. Calculate the molar…

A:

Q: Calculate the root mean square velocity and kinetic energy of CO, CO2, and SO3 at 298 K. Which gas…

A:

Q: A gas at constant temperature occupies a volume of 2.40 dm3 and exerts a pressure of 110 kPa.  What…

A:

Q: Use Graham's law of effusion to calculate molar mass. A sample of argon, Ar, effuses through a small…

A: Answer:- This question is answered by using the concept of determination of rate of effusion which…

Q: Gaseous neon is observed to effuse through a tiny hole at a rate of 1.90 cm3/min. An unknown gas is…

A: According to Graham's law of effusion, rate of effusion is inversely proportional to molar mass of…

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.