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Calculate the ratio `(C_p / C_v)` of oxygen from the following data . Speed of sound in oxygen`(= 32g mol^(-1))` and the gas constant `(R = 8.3 J K ^(-1) mol^(-1))`.

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The speed of sound in a gas is given by
`(v = (sqrt gamma P / rho )) = (sqrt gammaRT / M) `
or, `(gamma = M_v^(2)/ (RT) `
` (32 xx 10^(-3) kg mol^(-1) (315 m s ^(-1) ) ^(2) / 8.3 J K ^(-1) mol^(-1) (273 K) = 1.4`

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