Hey having a bit of trouble with this one. I really don't know how to start. Think I just simply don't have the right equations or I'm using the wrong units. Hopefully you guys can help me.
1. The problem statement, all variables and given/known data
Find the molar mass and the number of degrees of freedom of molecules in a gas with known heat capacities: Cv = 650 J/(KgK) and Cp=910 J/(KgK).
2. Relevant equations
The equations that I can find in my book that I've been trying to figure out are :
1.Cv = (RP)/2 where R = Gas constant and P = number of degrees of freedom.
2.Cp = R(1+P/2)
3.Cp = Cv + R
3. The attempt at a solution
Well when I first started off I simply applied the Cv formula to the value of Cv and solve for P, the number of degrees of freedom. However when I did this, i got an answer of ~156 which I can immediately tell is not correct.
I am led to believe that I'm not using the correct units for Cv and Cp as they don't solve the last equation(3) correctly.
1. The problem statement, all variables and given/known data
Find the molar mass and the number of degrees of freedom of molecules in a gas with known heat capacities: Cv = 650 J/(KgK) and Cp=910 J/(KgK).
2. Relevant equations
The equations that I can find in my book that I've been trying to figure out are :
1.Cv = (RP)/2 where R = Gas constant and P = number of degrees of freedom.
2.Cp = R(1+P/2)
3.Cp = Cv + R
3. The attempt at a solution
Well when I first started off I simply applied the Cv formula to the value of Cv and solve for P, the number of degrees of freedom. However when I did this, i got an answer of ~156 which I can immediately tell is not correct.
I am led to believe that I'm not using the correct units for Cv and Cp as they don't solve the last equation(3) correctly.
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