# Search results

1. ### General Solutions to a Linear System

According to this, http://upload.wikimedia.org/math/5/8/2/582b41cd88284564c46e711cbbca55fa.png http://en.wikipedia.org/wiki/System_of_linear_equations#Homogeneous_systems A general solution to some linear system is a particular solution (P) + a homogeneous solution (H) My question: is...
2. ### SP Carbon Orbitals

It seems like they are both sp2 to to me :O
3. ### Valid Resonance Structure?

So my 2nd structure isn't valid because that would mean the carbon would have 5 bonds? (another carbon, the double and 2 hydrogens) ? If that's right it seems the hydrogen is still there?
4. ### Valid Resonance Structure?

So why is the 2nd step of my resonance structure invalid, then?
5. ### Valid Resonance Structure?

So even though we remove a H, for purposes of bonds we pretend it is still there? Is what I said above correct? Thanks
6. ### SP Carbon Orbitals

When the hydrogens/protons are removed, leaving C-, can someone please tell me what and why the SP orbitals of these two carbons are? http://img30.imageshack.us/img30/5333/40529044.jpg [Broken] Thanks.
7. ### Valid Resonance Structure?

Thanks. My question was because of this: I was wondering if you made the C have a negative formal charge, if that was the same thing as pulling off a hydrogen/proton. But I guess the negative charge is because of another electron around the atom, not the loss of a hydrogen, which would mean...
8. ### Valid Resonance Structure?

I know it doesn't show all the places, I'm asking if that is ONE of them. I don't think it is, since wouldn't that mean the carbon would have 5 bonds? (another carbon, the double and 2 hydrogens) ?
9. ### Valid Resonance Structure?

It's a way of showing more than one lewis structure where they are sort of moving in and out of each
10. ### What's the sp orbital of this carbon?

Domains = things the atom is bonded to where "things" are: single pairs, lone pairs, double bonds Is that what you meant? So the carbon is sp2 right?
11. ### What's the sp orbital of this carbon?

Never learned that
12. ### Valid Resonance Structure?

Not to be rude, but I would love it if you could answer my question even briefly. I know what resonance is, I can assure you of that. :)
13. ### Valid Resonance Structure?

is mine just not valid because it violates the octet rule since there are H's involved as well?
14. ### What's the sp orbital of this carbon?

It is possible, it's from my book. Since it has a double bond, it's sp2 i think? I just don't know if the - formal charge affects that.
15. ### What's the sp orbital of this carbon?

Meant to upload this one, sorry. is it sp2? sp3?... http://img198.imageshack.us/img198/5062/92513846.jpg [Broken]
16. ### Valid Resonance Structure?

Why is that not valid?
17. ### What's the sp orbital of this carbon?

The on on the left w/ the red arrow pointing to it: http://img198.imageshack.us/img198/5062/92513846.jpg [Broken]
18. ### Valid Resonance Structure?

Is this valid: http://img197.imageshack.us/i/imagecct.jpg/
19. ### Understanding Bonding

I'm not asking that much... how does a C=C bond form in terms of 4 valence electrons? It's WAY before reaction mechanisms in my book, so I think you are overcomplicating it a bit.
20. ### Understanding Bonding

No, I haven't. Mind telling me how each Carbon's 4 valence electrons move, then to get C=C?
21. ### Octet Rule

The -2 charge is on the C or the O....?
22. ### Understanding Bonding

No specific mechanism, trying to draw a Carbon double bond with another in terms of electrons so I can understand. What's wrong with it?
23. ### Understanding Bonding

When Carbon double bonds to another carbon, does one of each's electrons move like this? http://img27.imageshack.us/img27/4566/bondb.jpg [Broken]
24. ### Octet Rule

So how would you go about drawing CO2^2- then?
25. ### Solubility and boiling point

I hear people say hydrogen bonds alone are weak, so it seems it is used that way in conversation.
26. ### Octet Rule

Thanks, but still wondering about an answer to my question. If they say it has a -2 charge, do you do that for the C or for the O? C right? And for FC 0, you just do the octet rule correct?
27. ### Octet Rule

Right, but you use the octet rule if the FC is 0, correct? Also, don't they need to tell you which atom has the formal charge :O If it says CO2 with a formal charge of -2, what do you do? do they mean the O has a charge of -2?
28. ### Octet Rule

2nd one since the others don't fulfill the octet rule?
29. ### Octet Rule

Yeah but if it says with an FC of 0, don't you just base your structure off of fulfilling the octet rule?
30. ### Octet Rule

I know formal charges. How does that help?