3 Ag + 4HNO, → 1 NO
+ 3 AgNO,
+ 2 H,0
a.
How many grams of silver are required to produce 85.2 g of water?
b. How many moles of Nitric acid form 84.12g of Silver nitrate?
c. How many grams of water are produced from 3.18 moles of Nitric acid?

3 hours because it is a decent distance.

i can ! i just need to know what the paragraph is! : p

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.