Bostic

q = mcTc m = 50.0 g = 0.050 kg c = specific heat capacity of silver = 234.3 J kg-1 °C -1 Tc = Change in temperature = 89°C – 20°C = 69 °C q = 0.050 kg * 234.3 J kg-1 °C -1* 69 °C Heat gained (q) = 8.1*10^2 J.