What is the specific heat capacity of styrofoam?
We need to remember that Styrofoam is a brand name.
It is actually a chemical compound polystyrene. Various values of its specific heat capacity are found. These are listed below.
The molar weight of the polystyrene taken as
With this the recommended value of Polystyrene comes to
One could use either of the above values depending on the accuracy desired. My preference would be the value given for Polystyrene under Reference 2.