Okay so we have the basic energy equation:
Q = m * Cp * dT
where Q = energy (Joules)
m = mass (grams)
Cp = heat capacity (J/g.C)
dT = change in temperature ( C)
here we have
Q = 1470 J
Cp = 0.90 J/g.C
dT = 16 C
so using the equation we find that:
m = 102.1g (1 d.p)
E=mct where E = Energy change, m = mass, c = specific heat capacity and t is change in temperature.
1.42 = 0.05x10-3 x c x 31.6
c = 898.7
c = 900 J Kg-1 K-1
0.90 J/g degrees C
0.90 j/g c
0.90 J/g°c