For SO42 -, sulfate ion, draw the Lewis structure (by counting valence electrons of each atom), determine the a) electron-domain geometry b) molecular geometry c) hybridization d) show the angle between the bonds in a drawing.

the bond angle is 90° since it's a tetrahedral shape.

Coal i believe hope this

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.