The value of the universal gas constant, R, is _?
Correct answer: A. 8.314 J/mol x K
- A. 8.314 J/mol x K
- B. 1.38 x 10^-23 J/K
- C. 6.63 x 10^-11 Nm2/kg2
- D. 1.6 x 10^-19 C
Explanation
The dimensions of the universal gas constant R are energy per degree per mole. In the meter-kilogram-second system, the value of R is 8.3144598 joules per kelvin (K) per moIt is calculated from the equation PV = nRT, where P is pressure, V is volume, n is the number of moles, and T is temperature.
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About Ideal Gas Equation
The ideal gas equation, PV = nRT, relates pressure, volume, amount and absolute temperature when gas particles are assumed to have negligible volume and no intermolecular forces. Applications include finding molar mass, density or an unknown gas variable, with careful use of Kelvin temperature and consistent units, and comparison with real-gas behaviour.
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