Calculate the energy for vacancy formation in nickel (Ni), given that the equilibrium number of vacancies at 850C (1123 K) is 4.7 1022 m3 . The atomic weight and density (at 850C) for Ni are, respectively, 58.69 g/mol and 8.80 g/cm3 .

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign