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This is the Base Model in Chemistry of Silver Nitrate and Copper.
2 AgNO3 (aq) + Cu (s) ---> Cu(NO3)2 (aq) + 2 Ag (s)

Assumptions in this  model:
1- Each agent represent one atom or ion or ionic compound.
2- Each agent of water represents 1 molecule of water.
3- Every gray copper represent 1/2 oxidation process.

When copper atom reacts with a silver ion, it turns gray as an indication of a change in oxidation state from 0 to +1. Once another silver ion reacts with copper of oxidation state +1 ending with oxidation state +2, that Cu(II) ion dissociates into solution.

To be added to this model: Copper Nitrate flowing into solution and forming a complex with three water molecules turning the solution blue.

The count of copper within 200 steps counts the red copper atom and the gray copper (+1) ions. The Cu+2 ions are not counted there because they are actually a separate breed in this model. That make sense because Cu+2 is a product of the reaction, while Cu+1 is considered a transition state of the copper atom agent.

Note: The databox counting #copper atoms can be:

count red copper + (count gray copper/2) or
count all the copper agents, red and gray - (count gray copper/2)

When silver nitrates runs out before the copper atoms, then we might have two (or multiples of two) gray copper agents, which really should correspond to one Cu atom that didn't finish undergoing a full oxidation to Cu+2. so we have to divide the gray copper agent number by half to get a true number for copper atoms.

Another way to explain it:
The reaction:
2 AgNO3 (aq) + Cu (s) ---> Cu(NO3)2 (aq) + 2 Ag (s)

can be written as:
AgNO3 (aq) + 1/2  Cu (s) ---> 1/2 Cu(NO3)2 (aq) + Ag (s)

so this 1/2 ratio is why we divide the count of gray copper by half. 
1/2 Cu is represented by one gray copper, which means 2 gray copper agents represent 1 Cu atom.
so to know how many copper atoms are left when all we have are gray copper agents, we take the gray copper count and divide by 2.

Owner: kgibbs1
Collaborators:
Created: Feb. 22, 2022, 1:33 p.m.
Version: 7 (Current Version) View Project History
Remixed from:Day 2 Reactants
Privacy: Public - any user can view this project

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1. Use the left, right, up, and down arrow keys on the left to orient your model so that it is right-side-up and facing to the right.

2. Use the + and - keys to resize your model to what you want it to be at size one. The lattice cube of size 1 is there for reference. Note: Any part of your model sticking out of the cube will not be detected in collisions.

3. Use the up and down arrow keys on the right to adjust the position of your model at ground level, with the bottom of the lattice cube being the ground.

4. Use the "Flip Lighting" button to make sure that your model appears lit up before submitting.

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