one litre of a gas has a mass of1.16grams at s. t.p. Analysis shows that this has contains 92•31% carbon and 7.69% hydrogen. a) determine the empirical formula of the compoundb) find the molecular formula of the compound

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.