R constant and shape of molecules

[lwon Dis2I]

Do we have to know how the shape of molecules affects their proportion to the R constant on the final? For example, the constant‑pressure molar specific heat for NO2(g), which consists of nonlinear molecules, is equal to 4R, where R=8.3145 J/(mol·K) is the ideal gas constant.

[ColmConnolly3D]

I believe we only need to know this for ideal gasses, and the values are given on the equation sheet, but I obviously can't say for sure

Hope this helps!

[Jarrett Sung 3B]

I don't think that we need to know this, because the gas constant is really only for ideal gases. One thing that is important to remember is to use the right gas constant based on the units provided.