A cubic piece of uranium metal (specific heat capacity = 0.117 J/°C g) at 200.0C is dropped into 1.00 L of deuterium oxide ("heavy water," specific heat capacity= 4.211 J/°C g2) at 25.5C. The final temperature of the uranium and deuterium oxide mixture is 28.5C. Given the densities of uranium (19.05 g/cm3) and deuterium oxide (1.11 g/mL), what is the edge length of the cube of uranium?