VitaminB12,cyanocobalamin,isessentialforhumannutrition.Itisconcentratedinanimaltissuebutnotinhigherplants.Althoughnutritionalrequirementsforthevitaminarequitelow,peoplewhoabstaincompletelyfromanimalproductsmaydevelopadeficiencyanemia.Cyanocobalaministheformusedinvitaminsupplements.Itcontains4.34%cobaltbymass.Calculatethemolarmassofcyanocobalamin,assumingthatthereisoneatomofcobaltineverymoleculeofcyanocobalamin.
___________g/mol