What is the percent yield of ferrous sulfide if the actual yield is 220.0 g and the theoretical yield is 275.6 g? use mc020-1.jpg.

The   % yield   of  ferrous   sulfide  is   calculated  as  follows

actual  yield/  theoretical  yield  x  100

actual  yield =220.0

theoretical  yield=275.6

that  is    220.0/  275.6  x100 =  79.83%

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.

Zinc contains about 30 protons