The internal energy of monatomic and diatomic gases are respectively due to:
Correct answer: A. Linear motion and rolling motion
- A. Linear motion and rolling motion
- B. rolling motion and linear motion
- C. Linear motion and rotatory motion
- D. rotatory motion and linear motion
Explanation
The internal energy of a monatomic gas is due to linear motion only and that of the diatomic gas is due to rolling (linear rotatory) motion. monatomic gases have internal energy primarily associated with translational kinetic energy, while diatomic gases have internal energy associated with both translational and rotational kinetic energy, and at higher temperatures, they may also have vibrational contributions. The key difference is the number of degrees of freedom and the way these degrees of freedom contribute to the internal energy.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Molar Specific Heat of a Gas
Molar specific heat is the heat required to raise the temperature of one mole of a gas by one kelvin, expressed through Q = nCΔT. Questions compare the constant volume value Cv with the constant pressure value Cp, apply the ideal gas relation Cp − Cv = R, and identify how the thermodynamic process affects heat capacity.
Practise Thermodynamics
714 free Thermodynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Molar Specific Heat of a Gas questions
Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperature may be different because the samples have different:
The value of γ of triatomic gas (linear arrangement) molecules is:
In an equation PVγ=Constant:
A gas mixture consists of 2 moles of oxygen and 4 moles of a argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is:
Specefic heat capacity at constant volume of gases in an adiabatic process is:
The amount of heat required to raise the temperature 1 one mole of substance through 1 Kelvin at constant pressure is called: