Cp & Cv Values: Example Problem 11.1 Explained

[williamcarter]

Hello, I tried attempting the following example problem 11.1(please see below), however I don't quite get from where they got cp=1.00 and cv=0.717?
I know that Q=m*cp*delta T=> cp=Q/(m*delta T)
Q=n*cv*delta T=>cv=Q/(n*deltaT)

Problem statement

Their solution:

How did they manage to get for cp=1.00 and cv=0.717?

Thank you

 

[Chestermiller]

(3.5)(8.314)/29=1.00

 

[williamcarter]

(3.5)(8.314)/29=1.00

Thank you , but how did you get these numbers from? They are not given in the statement of the problem.
What about cv?

 

[Chestermiller]

In terms of the ideal gas constant R and the number of degrees of freedom f, what is the equation for the molar heat capacity at constant volume of an ideal gas? In terms of the ideal gas constant R, what is the relationship between the molar heat capacity at constant pressure and the molar heat capacity at constant volume of an ideal gas?