What would be the cathode in this reaction? 0.80 V
Ag* + e --> Ag
= -0.25 V
Ni2+ + 2e --> Ni

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.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

answer; talc and gypsum;

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.