Specific heat of oxygen at a constant pressure is 0.2174 kcal/kg K. If the ratio of its specific heat is 1.4,find the universal gas constant given that J=4200J/kcal and molecular weight of oxygen is 32.

Specific heat of oxygen at a constant pressure is 0.2174 kcal/kg K. If

1.	Specific heat of oxygen at a constant pressure is 0.2174 kcal/kg K. If the ratio of its specific heat is 1.4,find the universal gas constant given that J=4200J/kcal and molecular weight of oxygen is 32.
Answer» <html><body><p></p>Solution :We have seen that `C_(p)=(gammaR)/(gamma-1)` <br/> `C_(p)`=<a href="https://interviewquestions.tuteehub.com/tag/molar-562965" style="font-weight:bold;" target="_blank" title="Click to know more about MOLAR">MOLAR</a> heat capacity at constant pressure=Principal specific heat at constant pressure `<a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a>` Molecular weight. <br/> As specific heat of <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> at constant pressure is given on kcal//kg K. we have to convert it into J/kg K <br/> `C_(p)=0.2174xx4200xx32 J/"Kmole"` <br/> `K=(gammaR)/(gamma-1) = (1.4R)/((1.4-1))` <br/> `<a href="https://interviewquestions.tuteehub.com/tag/r-611811" style="font-weight:bold;" target="_blank" title="Click to know more about R">R</a>=(0.2174xx4200xx32xx0.4)/(1.4) = 8348J/"kmoleK"` .</body></html>