What is the ratio of the average speed of He molecules to that of CH4 molecules at 298 K? a. 1:1 b. 11:7 c. 2:3 d. 3:2 e. 2:1

Q: The average molecular speed in a sample of CH4 gas at a certain temperature is 643 m/s. The average…

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Q: Which of these two gases has the greater average molecular velocity? Flask A Flask B

A: average velocity of gas =8RTπM where  T = temperature in K and M = molar mass of gas. and R =…

Q: A sample of nitrogen gas (N2) is at a temperature of 25oC. Calculate the speed of the N2 molecule…

A: Since the kinetic energy of 1 mole of the gas molecules is given by  KE = (3/2) RT  where R = gas…

Q: The average molecular speed in a sample of Ar gas at a certain temperature is 441 m/s. The average…

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Q: At the same temperature, which of the following gases will effuse the slowest?  A. Hydrogen B.…

A: According to graham's law, the rate of effusion of any molecule is inversely proportional to the…

Q: How does KMT explain the effects of increasing the temperature of a gas?

A: When temperature is increased, average speed and kinetic energy of  gas molecules increase according…

Q: A sample of N2O3 gas has a pressure of 0.32 atm.  The temperature is then doubled and the N2O3 gas…

A: Let the initial temperature is T K and pressure is P1=0.32 atm. On increasing temperature to 2T K…

Q: Which gas has the slowest average molecular speed at 25 °C? Molecular Gas mass (g/mol) Ne 20.2 Ar…

A: Average  molecular  speed  = 8RTπM  where M is molar mass Average  molecular  speed  inversely…

Q: A container has an initial pressure of 2.82 atm and an initial volume of 46.2dL. The final volume is…

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Q: .If container "A" is occupied by 1.0 mole of oxygen gas (molar mass 32.0 g/mol) while container "B"…

A: Correct answer is container "A" must be larger than container "B". Avogadro's law: At the same…

Q: If 2.24 mol of a gas occupies 51.6 L at 34 °C and 782 torr, 1.32 mol of this gas occupies, L under…

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Q: Charles' Law A gas occupies 0.67 L at 350 K. What temperature is required to reduce the volume by…

A: We will use Charles Law for this question.  In case of Ideal Gas, volume of any gas  is directly…

Q: A balloon construction that contained 200001887.5 L of H2 when completely filled. The balloons…

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Q: T/ The images below show three possible paths for a gas molecule moving inside a filled volleyball.…

A: Kinetic theory of gases is a theory which deals with the properties related to the motion of gas…

Q: 0.1800 mol of C2H4(g) and 0.1800 mol of H2O2(g) and occupies a volume of 14.7 L.

A: Answer: Calculate the volume of the sample after the reaction takes place, assuming that the…

Q: If pressure is expressed in atmospheres and volume is expressed in liters, PΔV has units of L atm…

A: We have to calculate the number of joules for the 2Latm.

Q: The average molecular speed in a sample of O3 gas at a certain temperature is 354 m/s. The average…

A: Given data: Average Molecular speed of O3 = 354 m/s Molar mass of CH4 = 16.0 g/mol. Molar mass of O3…

Q: A 0.245 L flask contains 0.467 mol CO2 at 159oC. Calculate the pressure using the ideal gas law.

A: We can calculate the pressure using ideal gas law. The ideal gas law expression is,…

Q: If the most probable speed of the gas molecules is initially 445 m/s, what is the new most probable…

A: The relation for the determining the most probable speed is shown below. vmp=2RTM Here, T is…

Q: What volume of sulfur dioxide is produced when 0.798 mol of hydrogen sulfide reacts completely…

A: we have to apply simple maths

Q: 3. 1.32 mmol of an ideal gas are expanded at the constant temperature of 298K. Calculate the Volume…

A: Ans:   number of moles of gas = 1.32 mmol…

Q: d.) Calculate for the pressure exerted by a Xe gas with a molar volume of 2.45 dm3 mol at 0°C if a.)…

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Q: Determine the density of air at 22 degrees Celcius and 760 torr. The molar mass of air is 28.9…

A: Given information: 22 degrees Celcius 760 torr The molar mass of air is 28.9 g/mol

Q: A  4.52 g sample of nitrogen gas, N2(g), is held in a 3.00 L gas flask at 298 K. Calculate the…

A: The ideal gas equation is PV = nRT. Where P is the pressure, V is the volume, n is the number of…

Q: 11. Consider the four gases, CO2, N2, CCI,, and He. Which is the correct order of increasing average…

A: Given gasses are: CO2, N2, CCl4, and He To compare their average molecular speed at 100°C

Q: Arrange the following molecules in order of increasing average molecular speed. NH3 at 383K, Ar at…

A: The average molecular speed of a gas is directly proportional to temperature and indirectly…

Q: 12. (c) Potassium metal reacts with water. 2K(s) + 2H,0(1) -→ 2KOH(aq) + H,(g) 0.2346g of potassium…

A: In the above question we have to calculate the volume of gas produce on reaction between Potassium…

Q: le of helium gas occupies 0.315 L at 300 kPa. More pressure is applied from the surroundings and the…

A: The quantitative relationship between volume and pressure is determined by Boyle’s law. It was given…

Q: Obtain the pressure exerted by the gas, with the following data: n= 2.35 mol, R= 0.0821 atm*l/mol*k,…

A: Given  Number  of mole ( n ) = 2.35 mole  Gas constant ( R ) = 0.0821 L.atm/(mol.K )  Temperature (…

Q: Consider 3.01*10^24 molecules of oxygen (atomic mass is 16.0 g/mole) in a container at a temperature…

A: A) The average translational kinetic energy is given by = (3/2)kT  Where k is the Boltzman's…

Q: A 100.-L flask contains a mixture of methane (CH4) and argon gases at 45°C. The mass of argon…

A: Total kinetic energy can be determined as,

Q: At the same temperature, which of the following gases will effuse the slowest? A) Hydrogen B) Helium…

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Q: Explanation of the kinetic theory of gases  What is the kinetic theory and its assumptions?

A: Kinetic theory of gases  - In order to explain the behavior of gases a theory was developed which is…

Q: How much faster does helium escape through a porous container than ozone, O3? eve aint lo et iclol…

A: Rate of effusion of gases is given by Graham's law. Graham's law said the rate of effusion of gases…

Q: The average molecular speed in a sample of SO2 gas at a certain temperature is 312 m/s. The average…

A: Given, average molecular speed of SO2 gas is ---- 312 m/s. What is the average molecular speed of Kr…

Q: Liquid water can be separated into hydrogen gas and oxygen gas through electrolysis. 1 mole of…

A: The hydrogen gas and oxygen gas is separated by the electrolysis of water. Given: The volume of the…

Q: A 0.245-L flask contains 0.467 mol CO2 at 159 °C. Calculate the pressure using the van der Waals…

A: Based on ideal gas law:

Q: A sample ot an unkown gas is found to gave a density of 2.80 g/L at a pressure of 1.14 atm qnd a…

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Q: The average molecular speed in a sample of Xe gas at a certain temperature is 236 m/s. The average…

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Q: A gas diffuses through a tiny opening at 1.37 times the rate of O2(g). What is the molar mass of the…

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Q: The average molecular speed in sample of O2 gas at a certain temperature is 464 m/s.  The average…

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Q: Calculate the volume of O, at 16 °Cand 747 mmHg required to completely react with 231L ethane (C,H,)…

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Q: A sample of gas is placed in a Sealed 12.5 L Erlenmeyer flask. It's pressure is found to be 1.25 atm…

A: This question is based on ideal gas equation. in mathematically the expression can be written as…

Q: The average molecular speed in a sample of AR gas at a certain temperature is 432 m/s. The average…

A: Average speed is related to temperature ( T )  and molar mass of the gas ( M ) by the expression

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.