[2.1g" of Fe combines with "S" evolving "3.77kJ" ."],[" The heat of formation of FeS in "kJ/mol" is "]

2.1 g of Fe combines with S evolving 3.77 kJ of heat. The heat of formation of FeS in kJ/mol is:

2.1g of Fe combines with S evoling 3.77KJ . The heat oof formation of FeS in KJ//mol is

Given: The heat of sublimation of K(s) is 89 kJ mol^(-1) . K(g) rarrK^(o+)(g)+e^(-), DeltaH^(Theta) = 419 kJ F_(2)(g) rarr 2F(g),DeltaH^(Theta) = 155 kJ The lattice enegry of KF(s) is -813kJ mol^(-1) , the heat of formation of KF(s) is -563 kJ mol^(-1) . the E_(A) of F(g) is