Determine the number of atoms per unit cell for each of the following metals. Unit cells of polonium, tungsten and nickel. Polonium's unit cell has eight atoms at the corners of the cell (one eighth in and seven eighths out). Tungsten's unit cell has one atom in the center of the cell and eight atoms at the corners of the cell (one eighth in and seven eighths out). Nickel's unit cell six atoms within the faces of the cell (half in and half out) and eight atoms at the corners of the cell (one eighth in and seven eighths out). . Part A Polonium Express your answer as an integer.

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give