Consider the following: SiF4, CF4, CF3H, and Ne. (a) Which one will diffuse the fastest? (b) What is the rms speed (m/s) of the slowest-moving atom or molecule at 25°C?

Q: What is the molecular weight of a gas that diffuses 1/50th as fast as hydrogen?

A: Given : Unknown gas diffuses 1/50th times than that of hydrogen.

Q: a) At what pressure does the mean free path of argon at 20 °C become comparable to the diameter of a…

A: a). First we have to find the diameter of container, The volume of a spherical container V is given…

Q: Why would it be impossible to breathe air through an extra-long snorkel (greater than a couple of…

A:

Q: What partial pressure of hydrogen results in a molarconcentration of 1.0 mmol dm3 in water at 25 oc?

A: Given data: Molarity of solution = 1 mmol/dm3 = 0.001 mol/L Temperature = 25oC  Formula used:…

Q: 50 cm3 of hydrogen gas enclosed in a vessel maintained under a pressure of 1400 Tor, is allowed to…

A: Boyle's law states that at constant temperature pressure of the gas is inversely proportional to the…

Q: What is the equivalent of 6.2 x 104 ppm in %w/v ?

A: Parts per million(ppm) can be expressed as millligrams per litre of solution . %w/v can be expressed…

Q: A sample of nitrogen is collected by water displacement at 730,0 mm Hg and 20°C. What is the partial…

A: At 20oC vapor pressure of water = 17.5 mm Hg = PwaterTotal pressure = Ptotal = 730 mm Hg According…

Q: A methane molecule may be considered as spherical, with a radius of 0.38 nm. Use this information to…

A: The mean speed of the molecules can be calculated as shown below.

Q: H)2+C,H, Each day 1.00 x 106 grams of calcium carbide are used and 3.60 x 10 dm3 of ethyne gas,…

A: Given, 1mol CaC2 = 64.099 g of CaC2 1mol C2H2 = 22.4 L (at room temperature) Theoretical Volume of…

Q: A N2 molecule at 20 ⁰C is released at sea level to travel upward. Assuming that the molecule does…

A: Determination of the height of the molecule: Given: Molecule = N2 Temperature = 20 0 C

Q: On a single plot, qualitatively sketch the distribution ofmolecular speeds for (a) Kr(g) at -50 °C,…

A: The molecules of gases are in random motion. The speed of the molecules is affected by the…

Q: If He (g) has an average kinetic energy of 8710 J/mol under certain conditions, what is the root…

A: The root mean square speed of O2 (g) molecules is calculated in step two.

Q: The energy of the van der Waals bond, which is responsible for a number of the characteristics of…

A: (a) It is given that the van der Waals bond energy for water is 0.50 eV. The expression for…

Q: Calculate the root mean square speed of helium atoms and nitrogen molecules in m/s at 25°C

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Q: What will be the density of CO2 in g/L at temperature 298 K, and 1 atm pressure?

A: The relationship between the mass of a substance (M) and the occupied volume (V) is furnished by a…

Q: A sample of neon of mass 425 mg occupies 6.00 dm3 at 77 K. What pressure does it exert?

A: Ideal gas equation:                                                      PV = nRT where, P=…

Q: At what pressure will the mean free path in room-temperature (20∘C)(20∘C) nitrogen be 1.3 mm ?

A: Mean Free Path is the average distance traveled by a moving molecule between collisions. N2 is a…

Q: It took 6.3 minutes for 25 mL of argon to reach the end of an effusion tube with a porous barrier.…

A: This question is based on Graham's law of effusion, which states that the lighter molecules will…

Q: In 2021, 7.5 x 1014 mol = 750,000,000,000,000 mol of CO2 into the atmosphere worldwide. At standard…

A: Given: Pressure = 1 atm. Temperature = 273.15 K And moles of CO2 = 7.5 × 1014 mol.

Q: At 273 K and 1 atm pressure, 1 mol of an ideal gas occupies 22.4 L. In whichparts of the atmosphere…

A: Molar volume = 22.4 L

Q: At what pressure does the mean free path of argon at 25 °c become comparable to the diameter of a…

A: T = 298 K λ= 1.0 dm3 = 0.1 m σ = 0.36 nm2 = 0.36 x 10-18 m2 λ=Rt2σP P=Rt2σλ

Q: what pressure does the mean free path of argon at 25°C become comparable to the diameters of the…

A:

Q: A sample of volume 258 cm3has a mass of 2.71 kg.(a) Is the material gaseous or condensed?(b) If the…

A:

Q: - 22+ 273a25 2. Ifa scuba diver breathes in pure oxygen out of his tank at 20°C,filling his 3.2…

A: Given, mass of O2 = 75 g Volume of tank = 3.2 L Pressure = ?

Q: A chemist is investigating the conversion of atmospheric nitrogen to usable form by the bacteria…

A: Given information,    1.25 g of nitrogen gas in a flask of volume 250 mL at 20 °C.         moles of…

Q: What is the volume of 4.55 x 1025 molecules of C4Hs at STP (Standard Temperature Pressure)?

A: Given T = 273 K , P = 1atm n= no of moles  = ( 4.55 x 1025 ) / 6.023 x 1023 = 75.54 moles

Q: The critical constants of methane are pc = 45.6 atm, Vc = 98.7 cm3 mol−1, and Tc = 190.6 K.…

A: Given: pc= 45.6 atmVc= 98.7 cm3 mol-1Tc=190.6K To find: Radius of the molecule

Q: What is the root mean speed in m/s of O2 at 15°C?

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Q: 3C. Restate the assumptions of the kinetic molecular theory.

A: The kinetic theory of gasses is an model of the thermodynamic behaviour of the gasses .It explain…

Q: 1.1(a) (a) Could 131 g of xenon gas in a vessel of volume 1.0 dm³ exert a pressure of 20 atm at 25°C…

A:

Q: Could 131 g of xenon gas in a vessel of volume 1.0 dm3 exert a pressure of 20 atm at 25 °C if it…

A: Ideal gases are hypothetical gases which do have real existence. A gas can behave ideally at low…

Q: The root mean square speed of H2 molecules at 25 °C is about 1.6 km/s. What is the root mean square…

A: The root mean square velocity of a particle is defined as the square root of the average of the…

Q: Elemental analysis of an organic liquid with a fishy odour gives the following elemental mass…

A: Given: Pressure = 435 torr = 0.572 atm Temperature = 150 oC = 423 K Volume = 150 mL mass of impure…

Q: The diameter of a Ne atom is 140 pm. What is the mean free path in nm of 0.5 mol Ne confined in 5 L…

A:

Q: The diameter of an Xe atom is 216 pm. What is the mean free path in nm of 0.75 mol Xe confined in 7…

A: Given Values: The diameter of Xe atom is 216 pm The mole of Xe is 0.75 and volume is 7 L and…

Q: If an inert gas diffuses 0.317 times as fast as does helium through the same container and at the…

A:

Q: What is the root-mean-square speed (Urms) of a nitrogen molecule that has an average KE of 6.24 x…

A: Given: Average KE= 6.24 x 10-21 J/molecule The root-mean-square speed (U rms) of a nitrogen molecule…

Q: An organic compound X, contains carbon, hydrogen and oxygen only. Compound X has the following…

A:

Q: Calculate the mean speed of atoms of argon in a gas at 25 oC if the mean speed of neon under these…

A: (A)From the expression of root mean square velocity, it is clear that root mean square velocity of…

Q: The mercury in a barometer of a cross sectional area 1cm² stands at 75cm, and the space above it is…

A: Welcome to bartleby !

Q: 1. A chemist collects 372 cm³ of gas over water at 90°C and 111.0 kPa. What volume would the dry gas…

A: Note : As per our guidelines we are supposed to answer only one question. Please repost the…

Q: Mass of a vacuumed (empty) vessel of volume 5 L is 640.05 g, and mass of the same vessel filled with…

A: Number of moles of hydrocarbon can be determined using Ideal gas Equation as follows,

Q: What is the molecular formula of a compound of empirical formula CH that diffuses 1.24 times more…

A: Introduction The diffusion for any two particular substances can be derived as: Rate1Rate2=M2M1

Q: Calculate the root-mean-square speed of Ne atoms at the temperature at which their average kinetic…

A: Given :-  Average kinetic energy of Ne = K = 4.33 kJ/mol = 4330 J/mol  Root mean square speed of Ne…

Q: 3. Calculate the mass of water vapor present in a room of volume 400 m 3 that contains air at 27°C…

A:

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.