The temperature of water in a Styrofoam cup increases from 30 °C to 33 °C when a 10 g cylinder of unknown metal at 430 °C is dropped in the water. The mass of the water is 250 g. The mass of the Styrofoam cup is 8.1 g, and its specific heat capacity is 1131 J/kg•K. Assume that the cup is a perfect thermal insulator. Calculate the specific heat capacity of the unknown metal (c_metal).