If the volume of the reaction vessel in the previous part was 1. 50 l, what amount of br2 (in moles) was formed during the first 15. 0 s of the reaction?.

i believe it is 40–40–20%

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.

what is the question?