The relation R/NA = 1.38 x 10^-25 JK-1 in a gas law is known as:
Correct answer: D. Boltzmann's constant
- A. Avogadro's constant
- B. Charles constant
- C. Newton's constant
- D. Boltzmann's constant
Explanation
The universal gas constant divided by Avogadro's number is the Boltzmann constant, k = R/NA = 1.38 x 10^-23 J/K. It is the gas constant per molecule rather than per mole, and it is what turns temperature into an energy per molecule in the term kT.
Last updated
About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
Practise Thermodynamics
714 free Thermodynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 mole of a gas occupies volume 1.00 x 10^-2 m³ in a gas cylinder whose pressure is equal to 2.50 x 10^5 Pa.The temperature of cylinder is:
A gas containing 'N' number of molecules of a gas having mass of each molecule'm' is in a cubic container having length of each side 'a'. What is the density of gascontained in a cube?
A gas undergoes the cycle of pressure and volume changes W --> X --> Y --> Z --> W shown in the diagram.What is the net work done by the gas
A system goes from A to B via two processes, I and II as shown in figure. If ∆UI and ∆UII are changes in internal energies in the processes I and II repectively, then:
A system is described in terms of thermodynamics variables: