A student was asked to identify an unknown metal with a mass of 1.28 g using calorimetry.
The metal was placed in beaker A with boiling water at \( 100.00^{\circ}C \) until the metal reached the same temperature as the water. The metal was then quickly transferred to beaker B with 5.65 g of water which had an initial temperature of \( 25.00^{\circ}C \). The final temperature of the water in beaker B and the metal was \( 26.77^{\circ}C \).
Data for unknown metal sample:
Mass of unknown metal/g = 1.28
Initial temperature of metal/°C = 100.00
Mass of cool water in beaker B/g = 5.65
Initial temperature of water in beaker B/°C = 25.00
Final temperature of water in beaker B and metal/°C = 26.77