The major air pollutant in coal-burning countries is a colorless, pungent gaseous compound containing only sulfur and oxygen. Chemical analysis of a 1.078g sample of this gas showed that it contained 0.540g of
sulfur and 0.538g oxygen. What is the empirical formula of this compound?
(Worked out fully)

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

56 moles of   lieter in chemistry

gold is my favorite solid.