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anonymous

  • one year ago

Will fan and medal!! Give the oxidation number of Nitrogen in each of the following compounds or ions: a) N2O b)Ca(NO3)2 c)NH4 ^+ d)N2H4 e)Mg3N2 Please explain how you got them

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  1. Photon336
    • one year ago
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    Let's take c) first 1. first we look to see if there's any kind of charge on the molecule 2. then we look for the oxidation states of the element(s) 3. we multiply oxidation state by the number of atoms for that element 4. add them all up. so for \[NH_{4}^{+}\] We have 1 atom of nitrogen and 4 atoms of hydrogen. Hydrogen has an oxidation state of +1 and there are four atoms right? so that's +4 we realize that the charge on our compound is +1 so the oxidation states must sum up to +1. Now we have +4 for hydrogen, and what oxidation state for nitrogen will give us +1 total. that's -3. so nitrogen is -3 and hydrogen is +1 -3 + 4 = +1 try choice D and tell me what you get

  2. Photon336
    • one year ago
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    \[N_{2}H_{4} \] try this one it's one of the choices @Shaekitchen

  3. anonymous
    • one year ago
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    im thinking aboout it but im getting no where just give me a min @Photon336

  4. anonymous
    • one year ago
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    Im sorry im still not quite understanding @Photon336 Im nnot sure how I find what they add up to

  5. Photon336
    • one year ago
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    @Shaekitchen first step is there a charge on N2H4 ?

  6. anonymous
    • one year ago
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    How do i tell like i know that H has 1+ and theres 4 of them so 4+ right? @Photon336

  7. Photon336
    • one year ago
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    yes correct

  8. Photon336
    • one year ago
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    @shaekitchen read these rules below. these are the most important YOU MUST LOOK TO SEE IF THERE IS A CHARGE ON THE MOLECULE, as in an ion. IF THERE IS A CHARGE: The oxidation states must add up to that charge. IF THERE IS NO CHARGE: the sum of the oxidation states = zero.

  9. anonymous
    • one year ago
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    so in N2H4 theres no charge correct?? @Photon336

  10. Photon336
    • one year ago
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    :) yep

  11. anonymous
    • one year ago
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    sso then would the charge on N be 2+ ?

  12. Photon336
    • one year ago
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    @Shaekitchen work out the entire problem and show me step by step.

  13. Photon336
    • one year ago
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    this will help you understand this

  14. Photon336
    • one year ago
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    @Shaekitchen

  15. anonymous
    • one year ago
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    I think i got it -6?

  16. anonymous
    • one year ago
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    @Photon336 thats the only way i got it to cancel it out

  17. Photon336
    • one year ago
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    |dw:1444101389055:dw|

  18. Photon336
    • one year ago
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    |dw:1444101598809:dw|

  19. Photon336
    • one year ago
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    @Shaekitchen please take a close look at how i set up the problem

  20. anonymous
    • one year ago
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    okay I am going to try N2O Thaat way you explained i really helped! @Photon336

  21. Photon336
    • one year ago
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    @Shaekitchen Write out everything by using the drawing tool then post it here

  22. Photon336
    • one year ago
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    But you need to make sure that you understand how I did it, does tat make sense?

  23. anonymous
    • one year ago
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    My computer isnt letting me use the drawing tool If i have N2O I have a charge on O of -2 right? Theres so many charges on O how do I know which one to use? @Photon336

  24. Photon336
    • one year ago
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    You always ask this question first before doing anything @Shaekitchen is there a charge on the molecule? oxygen almost always has a charge of -2

  25. anonymous
    • one year ago
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    Theres no charge on this molecule but if O is 2- doesnt that mean that N would just be 1-?

  26. Photon336
    • one year ago
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    almost, but no charge means oxidation states MUST = ZERO ask your self if you summed up those numbers would you get zero?

  27. anonymous
    • one year ago
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    I got it it would be +1 Im going to do the rest on my own as my computer is slow thank you for your help @Photon336

  28. Photon336
    • one year ago
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    @Shaekitchen great job, it's +1 remember to use those rules. you should be able to figure out the rest now take care

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