The specific heat of Ar at constant volume is 0.075 kcal kg-1 K-1. Calculate the atomic weight (R = 2 cal mol-1 K-1)
Correct answer: A. 40
- A. 40
- B. 40.4
- C. 40.2
- D. 40.80
Explanation
Option A is correct.We know that:M=Cv/SV = 3*2/2\0.075 =40we know that CV=3/2R
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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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