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 .

0.863333

86%

hope this

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

more than, less

less than, more