Asample of a compound contains 30.0 g calcium and 5.05 g hydrogen. its molar mass is 78.12 g/mole. what is the compound’s molecular formula?

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.

thats how its supposed to be