Alright, no problem! We know that the equation for heat is:
q = mcΔT, with q being the quantity of heat, m is the mass of the system, c being the specific heat, and ΔT being the change in temperature.
If we rearrange the equation we get
C = q/(mΔT),
ΔT = (48.0°C - 25.0°C) = 23°C m = 95.4 grams q = 849 joules
C = 849J/(23°C * 95.4g) = 0.387 J/g°C
