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hypervalent_iodine

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Posts posted by hypervalent_iodine

  1. Oh how I hate when institutions teach students to draw bonds as dots. 

    17 minutes ago, Rachel Maddiee said:

    So what changes do I need to make in my description?

    What do you think? Most of your description was fine, but your parts about how the octet rule is not satisfied needs to be re-looked at. Count the electrons (dots) around the C and O. What do you know about formal charge and Lewis structures? What charge would the C and O have in that picture? Is that good or bad? 

  2. I assume that this is referring to a Lewis structure you have not shown here? Could you possibly post a picture of it so I can understand if your answer is correct?  I would note that you have said in your answer that the C had a lone pair and 3 bonds, yet only 7 electrons around it - this would not be true based on your description (2 electrons per bond and 2 per lone pair = 8). I would also be careful of your use of the term, "need." Yes, the oxygen and carbon atoms do require that many in this instance so as to minimise formal charge, but don't forget that they can have more or less than those numbers (except carbon, which cannot have more). Consider carbanions, for example, or oxoniums.  

    The hand-drawn Lewis structure given underneath the answer is fine. 

     

     

  3. 2 hours ago, CharonY said:

    There is usually sever lack of funding to create and maintain permanent firebreaks, especially in remote areas.

    It would be made considerably easier if it weren't almost entirely up to the states to fund and coordinate preventative measures (in Aus, anyway). Years ago, in the aftermath of the Black Saturday bushfires in Victoria in 2009, there was a huge shortfall identified in the way that we manage land and fuel load that contributed to the severity of the fires at the time. Almost nothing has changed, and the states simply don't have the resources to do what needs to be done on the scale required. Given the magnitude of these fires, and given that it's only going to get worse, I can't see any good reason why there shouldn't be more federal funding made available for this. If they can spend close to $30million detaining four people on Christmas Island for the singular purpose of showing how cruel they can be, they can surely spare something towards being better prepared for bushfires. It would also be helpful if our current government hadn't of cut funding to the fire and rescue services, and ignored the urgent requests of former fire and safety chiefs earlier this year to discuss the lack of preparedness for the current fire season. 

  4. There are several ways by which dendrimers can be employed in drug discovery platforms. I believe the OP is referring to encapsulation, which is a common strategy used, for example, in overcoming permeability issues that one might encounter with gram negative bacteria. I am not familiar with the landscape, but if dendritic formulations aren’t commercially available yet it is because they are still in development, or they are no longer being pursued for whatever reason. As mentioned, it generally takes many years and a lot of money and research and more money before a drug or a new formulation makes it to market. 

  5. 1 hour ago, koti said:

    I know exactly what you mean. Stop digging on me before you cross the line.

    !

    Moderator Note

    Knock it off. This isn’t the place for making weird accusations to other members. Stick to the topic and try to stay a little more objective. 
     

    While we’re at it, and though I appreciate that these subjects can be a little charged, I would further recommend you use more caution with your language. Recall that we have rules that prohibit members using this site as a platform for making slurs against a group or groups of people. Comparing gender to the very disparate issue of obesity in addition to some of your other “jokes” is very close to crossing the line, if it hasn’t already. Others have made some thoughtful contributions around the science of the topic, and I would suggest sticking to that line of discussion or simply leaving it alone.

     
  6. 3 hours ago, J.C.MacSwell said:

    We have a cat. It has quite a personality. It really enjoys being a nuisance including walking on my keyboard when I'm typing.  

    ...and here she is!


    No cats here, but I do happen to have my own brand of winged keyboard nuisance. 
     

    B2E2D01A-DCD7-4EF0-AFF9-3313CE067F2D.jpeg

     

    (She looks peacefully asleep here, but she will destroy you if you try to disturb her.)

  7. 38 minutes ago, Joduh said:

    If I'm just to be trashed, I'll refrain from posting the rest of it.

     

    !

    Moderator Note

    That is up to you. You will need to post your proofs for this to not get shut down. Failure to do so will result in this thread being closed. 

    Kindly do not respond to this mod note further within the thread. If you have questions, please PM staff. 

    FTR, I did hide one of your posts as it was OT and in response to a post I had already removed. Everything you have posted in this thread is still here. 

     
  8. 4 minutes ago, Joduh said:

    The big ideas here though, kinda happen before math

     

    !

    Moderator Note

    Which unfortunately for you runs counter to the purpose (and rules) of this particular sub-forum. You must provide some sort of testable model, as well as evidence / proof. If you cannot do this, your thread here will be short lived. 

     

     

    4 minutes ago, Joduh said:

      Blob theory is still infantile though, and I need other thinkers to look at it.

     

    !

    Moderator Note

    This too is insufficient. You are the person proposing new ideas, and so you are the person who must show them to be reasonable and backed by evidence. Rules 1 of this section:

    Quote

    The Speculations forum is provided for those who like to hypothesize new ideas in science. To enrich our discussions above the level of Wild Ass Guesswork (WAG) and give as much meaning as possible to such speculations, we do have some special rules to follow:

    1. Speculations must be backed up by evidence or some sort of proof. If your speculation is untestable, or you don't give us evidence (or a prediction that is testable), your thread will be moved to the Trash Can. If you expect any scientific input, you need to provide a case that science can measure.

     

    You may also wish to take a look at these two threads:

     

     
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