InterviewSolution
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InterviewSolution
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The density of a polyatomic gas in stantard conditions is `0.795 kg m^(-3)`. The specific heat of the gas at constantA. `930 J-kg^(-1) K^(-1)`B. `1400 J-kg^(-1) K^(-1)`C. `1120 J-kg^(-1) K^(-1)`D. `1600 J-kg^(-1) K^(-1)` |
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Answer» Correct Answer - B b. Ideal gas equation for `m` grams of gas is `PV = mr T` (where `r=` specific gas constant) or `P = (m)/(V) rT = rho rT` `implies r = (P)/(rho T) = (1.013 xx 10^(5))/(0.795 xx 273) = 466.7` Specific heat at constant volume `c_(v) = (r )/(gamma - 1) = (466.7)/((4)/(3) -1) = 1400 J//kg-K` `(gamma = 4//3` for polyatomic gas) |
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