What type of reaction is 3Ba(NO3)2 + 2H3PO4 = Ba3(PO4)2 + 6HN03

i think so it’s will be b yes i believe its

am i too late?

explanation:

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.