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  1. S

    Molarity and Ion concentration question

    I finally got to the last page of my assignment, and there is a problem I can't figure out how to do. It is this: Given the reaction below, if 52.2mL of 0.771M Ba(NO3)2 reacts with 65.9mL of 1.11M NaF, calculate the concentration of all ions in solution after the reaction. Ba(NO3)2 (aq) + 2NaF...
  2. G

    Atoms and Ions and Stability

    Hello Please disapprove me if I am wrong (which I think I am ) If an atom is stable when the electrons = protons, I assume Na is stable but Na^+ is also stable because it fulfilled the octet rule even though it has 10 electron and 11 protons ? " I haven't learned about Stability yet, so...
  3. P

    Please Help With An Electrochemical Calculation.

    Hi, Please help me with this, I greatly appreciate any assitance; An electrochemical cell is given, one containing an 0.1M CuSO4 solution and the other one containing an 0.1M ZnSO4 solution. Then, the Cu ion concentration is decreased by adding an Ammonia solution NH4OH into the CuSO4...
  4. D

    What is the mass of 3.2kilomol of chloride ions?

    What is the mass of 3.2kilomol of chloride ions? the cholride ions is getting me really confused
  5. N

    Manganate VII ions

    Hi How does MnO4-bond together as an oxidising agent to me the manganate ions have a charge of +7 and the oxygen -8 My example reads that to make the magnatate ions stable 5 electrons are added to make it +2 but where does the oxygen come into it? Regards
  6. M

    Ions' protection from oxidizing

    Hello, how can I know, having only standard potentials, whether a compound is suitable to protect Fe2+ ions from oxidizing?
  7. S

    Chemistry- Reaction of Ions

    A student mixes four drops of an aqueous solution of Pb(NO3)2 with 4 drops of an aqueous solution of (NH4)2 CrO4 in a chem plate. A bright yellow solid appears immediately upon mixing. Write complete molecular, complete ionic, and net ionic equations for the reaction. Identify the spectator...
  8. K

    Calculating Valence for Ions:

    Hello, I am working on a study guide for an exam in Inorganic Chem, and I am having a tough time trying to figure out how this question wants me to solve. I cannot figure out if it wants me to find the charge or the actual number of valence electrons in the ion. The question is as follows...
  9. N

    Seperating Ions in Solution

    I only have two of these question but am totally confused by both. My teacher isn't the best and I'm taking the course online so it doesn't help any. Here is an example of how the question should be properly done (as I find people generally have a hard time conveying what my teacher is trying...