When iron (II) sulfide was dissolved in excess of hydrochloric acid, 11.2 liters of gas were released. The mass of iron (II) sulfide is equal to
Compose a reaction equation
FeS + 2HCl = H2S + FeCl2
Calculate the amount of gas substance (H2S) 11.2 L / 22.4 L / mol = 0.5 mol
Calculate the amount of iron sulfide substance (2) (FeS) = 0.5 mol (equal to the amount of gas substance)
Calculate the mass of iron sulfide (2) m (FeS) = M * n (amount of substance) = 88 g / mol * 0.5 mol = 44 g
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.