Question #332089

EX 5:- 1 The molecular weight of carbon dioxide, CO2


, is 44. In an experiment the value


γ for CO


2 was found to be 1.3. Assuming that CO


2


is a perfect gas, calculate the gas


constant, R, and the specific heats at constant pressure and constant volume, Cp, Cv


(0.189 kJ/kg.K; 0.63kJ/kg.K; 0.819kJ/kg.K).

1
Expert's answer
2022-04-21T17:44:30-0400

сv=iR2μ=68,3120,044(J)=68,3120,044:1000=0,566(kJkgK)с_v = { i*R \over 2\mu}= {6*8,31 \over 2 * 0,044}(J)={6*8,31 \over 2 * 0,044}:1000= 0,566({kJ \over kgK})

сp=(I+2)R2μ=88,3120,044(J)=88,3120,044:1000=0,755(kJkgK)с_p = { (I+2)*R \over 2\mu}= {8*8,31 \over 2 * 0,044}(J)={8*8,31 \over 2 * 0,044}:1000=0,755({kJ \over kgK})

R=cpcv=0,7550,566=0,189(kJkgK)c_p-c_v=0,755-0,566=0,189({kJ \over kgK})

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