E-12

The main equation for calculation is

c=C/m = Q/[m(T_f - T_i)]
To calculate molar specific heats using c_s' = c_s.M.W,
The difference between c_s and c_s' is: using n instead of m for the latter; n is the number of moles or the number of molecules. It can be calculated as mass of the substance divided by the molecular mass of the substance.

Error Analysis
2. If heat is lost to the enviroment during the measurement, then the value of T_f - T_i will be too small, then from eq. (11-2), c will be bigger.

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