If for a gas (R/Cv)=0.67 this gas is made up of molecules which are:
Correct answer: C. Mono atomic
- A. Diatomic
- B. Mixture of diatomic and polyatomic
- C. Mono atomic
- D. Polyatomic
Explanation
The correct answer is C because a gas with (R/Cv) = 0.67 indicates that the gas behaves as a monoatomic gas. Here, R is the molar gas constant, and Cv is the molar heat capacity at constant volume. For monoatomic gases, the value of (R/Cv) is approximately 0.67. This characteristic value of (R/Cv) is a key feature of monoatomic gases, and it indicates that the gas is made up of monoatomic molecules, meaning the gas is composed of single atoms bonded together.
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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.
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