Explain how the distribution of kinetic energies of the molecules in a sample is affected by:
a. the use of a catalyst in a chemical reaction
b. an increase in temperature in a chemical reaction
( a ) A catalyst doesn't change distribution of kinetic energy of the molecules, it just shorten the energy barrier so that more number of molecules can easily overcome it.
( b ) On increasing temperature fraction of that molecules ( e- Ea/ RT ) increases that have kinetic energy greater than or equal to activation energy .
Explain how the distribution of kinetic energies of the molecules in a sample is affected by:...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule.R=8.314 J/(mol·K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kg·m2/s2.What is the rms speed of Cl2 molecules at 415 K? What is the rms speed of He atoms at 415 K?
The average kinetic energy of the molecules in a gas sample depends only on the temperature, 7. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed = where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m/s). What is the rms speed of...
1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions.
1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions.
Calculate the average kinetic energies of CH4 and N2 molecules at 273 K Average kinetic energy of = J/molecule Average kinetic energy of = J/molecule 502 K Average kinetic energy of = J/molecule Average kinetic energy of = J/molecule
The kinetic energies of molecules are responsible for: Select the correct answer below: O holding molecules close together o increasing the distance between particles changing the magnitude of intermolecular attractions. none of the above
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the sume kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT rms speed where R 8.314 J/(mol-K) and M is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m2/s2) What is the rms speed of O, molecules...
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed 3RT mms speed - VA where R = 8.314 J/mol K) and is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kgm/s?). What is the rms speed...
What would happen to the average kinetic energy of the molecules of a gas sample if the temperature of the sample increased from 20°C to 40°C? A) It would become half its value. B) It would double. C) It would decrease. D) It would increase. E) Two of these.
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed = M where R= 8.314 J/(mol.K) and M is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg.m-/s). What is the rms speed of Cl,...