The plot below shows the distribution of molecular velocities for two gases (A and B) at the same temperature. Which of the following statements about these gases is TRUE? Recall that a "particle" can be an atom or a molecule. A Molecular Velocity 1200 200 400 600 800 1000 A. The particles in gas A have a lower average kinetic energy (KEavg) than the particles in gas B B. Gas A has a higher molar mass than gas B C. Gas A diffuses/effuses more slowly than gas B Both B and C O All of A, B, and C O B only OC only OA only Fraction of Molecules B.

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

A: Grahams’s Law of effusion states that the rate of effusion of a gas is inversely proportional to…

Q: Consider separate 1.0 liter gaseous samples of N2, Ar, CH4, and CO2 all at STP... (a) Rank the…

A: The gaseous samples given at STP are N2, Ar, CH4, and CO2.

Q: A gas mixture contains each of the following gases at the indicated partial pressures N 2 ,216 torr;…

A: Partial pressure of N2 = 216 torr ...Or  because 1 atm = 760 torr  ...so,  = 216 torr × (1 atm / 760…

Q: A 2.65 g sample of an unknown gas at 75 ∘C and 1.10 atm is stored in a 2.65 L flask. What is the…

A:

Q: Which of the following statements is (are) correct? I. The average kinetic energy of the gas…

A: The relation between the rate of effusion and the molar mass is given by Graham's law; r1r2=M2M1

Q: If container "A" is occupied by 1.00 mole of oxygen gas while container "B" is occupied by 20.0…

A: No of moles of oxygen gas in container A = 1 mol . So no of atoms in A = 6.022×1023 molecules . No…

Q: The plot below shows the distribution of molecular velocities for two gases (A and B) at the same…

A: Interpretation: We have to tell which statement is true.

Q: A 1.65 g sample of an unknown gas at 55 °C and 1.00 atm is stored in a 2.45 L flask. What is the…

A:

Q: If a gaseous mixture is made by combining 2.56 g Ar2.56 g Ar and 3.64 g Kr3.64 g Kr in an evacuated…

A: Moles of Ar = mass of Ar / Atomic mass of Ar = 2.56 / 40 = 0.064  and moles of Kr = mass of Kr /…

Q: The graph shows the molecular speed of four gases at 27 °C. What, if any, relationship is observed…

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Q: A 3.55 g sample of an unknown gas at 59 °C and 1.05 atm is stored in a 1.05 L flask. What is the…

A: a) Since mass of gas is given = 3.55 g  and volume of gas = volume of flask = 1.05 L hence density…

Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

A: step 1: Here, given as the: Thus, the mass of gas is 1.38g. Now, to calculate the molar mass,…

Q: A gas mixture is made by combining 8.5 g8.5 g each of Ar,Ar, Ne,Ne, and an unknown diatomic gas. At…

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

Q: a certain gas was found to have a mass of 28.0g and occupy a volume of 22.4L at STP. What is the…

A: Given mass  of a gas is 28.0 g which occupy a volume of 22.4 L at STP . It means hear 1 mol of gas…

Q: A 1.95 g sample of an unknown gas at 67 °C and 1.05 atm is stored in a 2.05 L flask. What is the…

A: The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by…

Q: Pls help on both questions.

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

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

A:

Q: a) 1.488×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 81.2 s. Under…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: molar mass

A:

Q: A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then…

A:

Q: The van der Waals equation of state was designed to predict the relabionship between pressure p,…

A: The van der Waals parameter 'a' is a measure of the strength of intermolecular forces among the gas…

Q: The plot below shows the distribution of molecular velocities for two gases (A and B) at the same…

A: This plot gives information about the fraction of molecules in having particular velocity range .…

Q: Which of the following gases has the highest rate of effusion at STP? O nitrogen All of these…

A:

Q: A 3.95 g sample of an unknown gas at 53 °C and 1.05 atm is stored in a 2.35 L flask. What is the…

A: Given: Mass (M) is 3.95 g Pressure (P) is 1.05 atm Volume (V) is 2.35 L Temperature (T) is 53oC To…

Q: A 1.95 g sample of an unknown gas at 61 ∘C and 1.00 atm is stored in a 1.45 L flask. What is the…

A: Given information:Mass of sample = 1.95 gTemperature = 61 °CPressure of gas = 1.00 atmVolume of…

Q: A 3.65 g sample of an unknown gas at 61 °C and 1.05 atm is stored in a 2.35 L flask. What is the…

A: We use ideal gas equation to find number of moles and then we use it for molar mass calculation.

Q: A 1.25 g sample of an unknown gas at 81 °C and 1.00 atm is stored in a 1.05 L flask. What is the…

A: Given, mass of unknown gas sample m = 1.25 g            temperature T = 81 °C = 81+ 273 K = 354 K…

Q: A 2.35 g sample of an unknown gas at 51 °C and 1.05 atm is stored in a 1.35 L flask. What is the…

A: Given, mass of a unknown gas sample (m) = 2.35 g Temperature (T) = 51°C = (51 + 273.15) K = 324.15 K…

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: The graph below shows the distribution of molecular velocities of four gases, NH3, O2, CO2 and Xe,…

A: In  the above question, distribution  curve of four gases are given. Four gases have different molar…

Q: Consider two 1-L samples of gas: one is H₂ and the other is O₂. Both are at 1 atm and 25°C. How do…

A: Since you have asked multiple sub-parts, we will solve the first three sub-parts. To get the answer…

Q: If a gaseous mixture is made by combining 4.55 g Ar and 2.24 g Kr in an evacuated 2.50 L container…

A:

Q: At 1.10 atm and 14.23 ∘C, a 2.15g sample of gas occupies a volume of 2.10×103 mL. Calculate the…

A: Given pressure = 1.10 atm volume = 2.10 × 103 ml Temperature = 14.23°C mass = 2.15 g

Q: A sample of xenon gas occupies a volume of 6.95 L at 493K. If the pressure remains constant , at…

A: The xenon gas sample is given at - Volume, V1 = 6.95 L  Temperature, T1 = 493 K Volume, V2 = 3.77 L…

Q: A sample of unknown gas effuses in 74.1 minutes. An equal volume of argon in the same apparatus at…

A:

Q: A 4.00-g sample of a mixture of CaO and BaO is placed in a1.00-L vessel containing CO2 gas at a…

A: First we have to calculate the reacted pressure of CO2 gas in the given reaction:- The initial…

Q: A 3.45 g sample of an unknown gas at 43 °C and 1.10 atm is stored in a 1.85 L flask. What is the…

A: Given datas ; m = 3.45 g T = 43°C =( 43 + 273 ) K = 316 K P = 1.10 atm  V = 1.85 L Density = mass /…

Q: A 1.85 g sample of an unknown gas at 47 °C and 1.00 atm is stored in a 2.85 L flask. What is the…

A: Given: Mass, m =1.85 g Volume , V =2.85 L Pressure, P = 1.00 atm Temperature, T = 47 +273 = 320 K…

Q: Compare the average kinetic energies, and the root-mean-square speeds of three gasses: Neon (Ne),…

A: Temperature is a measure of the average kinetic energy of the particles in an object.

Q: A 2.65 g sample of an unknown gas at 21 °C and 1.10 atm is stored in a 1.05 L flask. What is the…

A:

Q: Container A contains 1 mole of Xe gas and Container B contains 1 mole of He gas. Both gases are at…

A: Rate of diffusion is given by Graham's law or it is known as graham's law of diffusion, it states…

Q: A 30.0 L vessel contains a mixture of carbon dioxide, sulfur trioxide, oxygen, and neon gases at…

A: The ideal gas equation is given by,                                                PV = nRT Where, P…

Q: Assuming that a 800 mg gas occupying a volume of 1,100 ml at a pressure of 1,600 mmHg and a…

A: Volume = 1100ml = 1.1L  Pressure = 1600 mmHg = 2.1052 atm  T = 75oC =  75 + 273K = 348K  Gas…

Q: A 2.25 g sample of an unknown gas at 79 C and 1.05 atm is stored in a 1.45 L flask, What is the…

A:

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: A 18.0 mg sample of an unknown gas is placed in a 750.0 mL flask at 85 0C and 1.20 atm. What is the…

A: Given data,Mass of gas=18.0mg=0.018gVolume=750mL=0.750LTemperature=85oC=85+273=358KPressure=1.2atm

Q: A 3.85 g sample of an unknown gas at 73 °C and 1.05 atm is stored in a 1.35 L flask. What is the…

A:

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 1.05 g sample of an unknown gas at 61 "C and 1.05 atm is stored in a 2.55 L flask. What is the…

A: Mass per unit volume is known as density. S.I unit of density is g/cm3 or kg/m3. Other units 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.