Tungsten carbide has a specific heat 0.203 J/g˚C. A sword made of pure tungsten carbide is heated to 120.0˚C then placed into 6.50 L of water. The temperature of the water rises from 38.5 ˚C to 42.3 ˚C. The specific heat of water is 4.184 J/g˚C and the density of water is 1.008 g/mL.
How much energy does water absorb from the sword? Express your answer in kJ.
Determine the mass of the sword in kg.