Question

A mixture of iron fillings and 1.6g of sulphur is heated until the reaction is completed. 4.4g of FeS are produced and no mass of sulphur is remaining. Calculate the mass of the unchanging iron

Answer 1

Answer:

The mass of iron is 4.4g - 1.6g = 2.8g.

The mass neither be destroyed nor be created, according to the mass of conservation