Calculate the number of moles of Co^+2 are there in the equation Co(H2O)6^+2 +4Cl <--> CoCl4^-2 +6H2O?
I had found in the previous question the number of moles of CoCl2*6H2O and I'm not sure but I believe the moles of CoCl2*6H2O are the same as CO^+2.
I read the question as how many Co^2+ total there are in that equation. There is 1 mol Co^2+ in CoCl2*6H2O and another in CoCl4^2- to make a total of 2 mol Co^2+. As I re-read the question it appears you have worked on parts of the problem and what you have posted is a re-worded part of the question. You may have changed the meaning of the question; at any rate, I read it as total mols from your post.
To calculate the number of moles of Co^+2 in the given equation, we need to determine the stoichiometry of Co^+2 in the reaction, and then use the mole ratio to convert the number of moles of another compound to moles of Co^+2.
In the balanced equation:
Co(H2O)6^+2 + 4Cl^-1 ⇌ CoCl4^-2 + 6H2O
The coefficient of Co(H2O)6^+2 is 1, which means that there is 1 mole of Co(H2O)6^+2. From the equation, it can be inferred that 1 mole of Co(H2O)6^+2 corresponds to 1 mole of Co^+2.
Since you mentioned that you have already calculated the number of moles of CoCl2*6H2O, which is the same as Co(H2O)6^+2, you can use the mole ratio to determine the number of moles of Co^+2.
For example, if you found there are 0.05 moles of CoCl2*6H2O, then there would also be 0.05 moles of Co^+2.
Remember to always check the balanced equation and consider the stoichiometry to calculate the number of moles accurately.