A metal rod is heated to 100°C and then dropped into a calorimeter containing 1 kg of water at 20.0°C. If the final equilibrium temperature of the mixed system is 21 °C, then the specific heat of
the metal is 448 J/kg °C, what is the mass of the metal rod? (The specific heat of water = 4186 J/kg °C)
A) 4.186 J
B) 1.1 kg
C) 111 g
D) 110 g​