Consider these compounds:A. Ag2SO4B. Ag2CO3C. FeSD. BaCO3Complete the following statements by entering the letter corresponding to the correct compound. Without doing any calculations it is possible to determine that zinc carbonate is more soluble than , and zinc carbonate is less soluble than . It is not possible to determine whether zinc carbonate is more or less soluble than by simply comparing Ksp values.

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.

there are two significant figures.