1. J

    What is the IUPAC name for this structure?

    Hi guys, Just stuck on this one. Just need the IUPAC name for this structure. See attachment. Thank you Josh
  2. J

    What is the IUPAC name for this structure?

    Hi guys, Just stuck on this one. Just need the IUPAC name for this structure. See attachment. Thank you Josh
  3. H

    Lewis Structure

    I am having a hard time understanding this, a bond gives 2 electrons to fill octet is what my teacher says. But i see it different, i see a bond taking a SPACE of 2 electrons but each atom connected only gets 1 electron. Let's start with BeCl2 as example: Be has 2 Valence(outer) electrons, and...
  4. A

    Pharmaceutical Structure Interactions

    I am ideally looking for available software like ChemDraw where I can draw a complex chemical structure (Vancomycin hydrochloride for example) and compare possible reactivity with another structure. The complication is the novel nature of this other compound. The end goal is to help support...
  5. A

    HCO3- Lewis Structure

    I was wondering if there are 2 versions of drawing the Lewis Structure for HCO3-, or if only the top one is correct? If so, could you possibly explain why it is one over the other and how I make that decision? (please see attachment!) Thanks!! :)
  6. A

    Hybrid structure

    Why does sp3d3 hybridised structure have a lone pair in the equatorial region instead of the axial region. Doesn't it look more stable? Thanks!
  7. A

    converting chemical structure to molecular formula

    Hi there, I don't have a chemistry background, so am struggling a bit with this one. I am required to convert the (shown) molecule to a molecular formula, but i'm not understanding how to do this. I thought maybe it was as simple as just adding everything up, i.e answer C3H9, but realise...
  8. Y

    atomic structure

    X-rays emitted from a copper target and a molybdenum target are found to contain a line of wavelength 22.85 nm attributed to the Kα line of an impurity element. The Kα lines of copper (Z=29) and molybdenum (Z=42) have wavelength 15.42 nm and 7.12 nm respectively. Using Moseley’s law, γ1/2 =...
  9. P

    Organic chemistry questions

    I'm taking organic chemistry online and it's such a struggle. The Powerpoints show examples only of problems with no explanation and I am having a hard time. I am on unit 4 out of 5 so I'm almost done but I'm so confused about a few things: 1. I was asking to draw...
  10. J

    Very confused on combo structure problem (given IR,HNMR,MS)

    Hello All, I am in serious trouble here with this structural determination. I am given IR, HNMR, and MS (with a CI (methane) MS). Here's where I am at: I know it must be a Carbox' Acid judging by the IR and characteristic Base Peak at 60 amu and 1 H at ~11ppm. The thing is I can't come up with...
  11. M

    Atomic Structure

    Hi everyone! So we were given a hand out on atomic structure which is fairly straight forward to me for the most part however I am getting hung up on the one question and wondered if anyone might be able to help? We were asked to fill out a table with the atomic symbol, atomic number, mass...
  12. A

    How to create structure from CIF?

    Hi all, I have a CIF (Crystallographic information file) and need to create structure from it. how can do it? I used Mercury but it did not draw real structure! I attached the CIF! Best wishes.. A.P
  13. N

    Hybrid Structure of Phenol

    I am trying to understand the structure of Phenol. As mentioned in my text book, Phenol is supposed to exist as a resonance hybrid of different structures. However, i am unable to understand the structures. i have attached an image. Please help me with the following questions. 1. Do the...
  14. M

    The structure and reaction of benzene- enthalpy question

    1.) The average enthalpy of hydrogenation of a single c=c bond is -20J/mol. Predict the enthalpy change or complete hydrogenation of a benzene ring and write the name of the product formed. 2.) The actual enthalpy of hydrogenation of bezene is -250J/mol. using this information and your answer...
  15. D

    Comparing molecular structure of two chemicals

    Hi guys and thanks in advance for any help. The two chemicals in question in this case are DEET and spinosad. The molecular structure for these two chemicals seem to be very similar, but I don't have a very good understanding of chemistry. DEET -C12H17NO Spinosad - C41H65NO10 The ratios of...
  16. J

    Help in Explanation of structure of hexaammini Ni +2 according to Valence bond theory

    NH3 is a strong ligand...and there remains 2 unpaired electrons in 3d orbital of Ni(+2)...then why doesnt back pairing occur to vacant one 3d orbital due to strong ligand and dsp3d(which doesnt exist) hybridisation occur????i know that it is just a case of outer orbital complex with strong...
  17. S

    Amino acids structure.

    I'm really stuck on this question I have for college. To be honest, I dont think we have even covered this yet so I might be getting ahead of my self. The question is. Using structural formulae, write an equation which accurately describes the formation of the dipeptide Gly-Ala from the amino...
  18. D

    Backbone structure of C3H9NO?

    Chemical analysis of Compound X revealed that the molecular formula of X is C3H9NO and that the molecule contains one amine (‐NH2) group and one hydroxyl (‐OH) group with a chain of three carbon atoms separating the two functional groups. Okay so for my open uni course I need to figure out the...
  19. K

    A valid Lewis structure of CS3:

    Hello, I believe this is the last problem on my study guide I have a question about. The question is: A valid Lewis structure of CS3 cannot be drawn. Why? My answer was that a valid structure cannot be drawn because CS3 displays the property of resonance. Am I correct in this...
  20. C

    Nucleic Acid Carbon Structure.

    Both DNA and RNA have nucleotides each made up of a phosphate group, a carbon sugar group, and a nitrogenous base (A, T, C, U, G). However each carbon in the sugar group are numbered and the functional groups are attached at either 3' or 5'. Overall, how are they numbered? In which order? I...