substance

  1. B

    Polymer Strengthening Substance

    During a recent experiment, I combined 1-6 Hexanediamine and Sebaclyl Chloride which created Nylon 6,10. Sadly, Nylon 6,10 as this experiment creates it, is simply too weak for practical uses I was looking at. I was looking for some substance that would potentially strengthen the polymer and...
  2. U

    Measuring the solubility of a substance

    So my chem teacher does this thing where he gives us questions on subject matter that he has yet to teach, so I’m a bit confused on these questions. Questions like, for example, what is the solubility of the given substances at 50 degrees Celsius, what is the minimum temperature required to...
  3. S

    [URGENT!]You CAN´T imagine how much i need your HELP - POISONOUS SUBSTANCE!!!!!

    Good day, please let me just say before writing my message, that i am dead serious and not making any jokes here. Somebody has been trying to poison me for almost 2 years, and today(or rather 2 days ago) it has become just too much of it. ____________________________________________ SO my...
  4. W

    cleaning acetone from a substance

    hey there, im new here and im not sure where should i post this, so feel free to relocate this thread if needed, thank. so - i have a basic question, ill try to make it short. im asking this for a friend who's alergic to paracetamol and caffeine. from info i've gathered over the internet it...
  5. L

    amount of substance concentration

    Hey guys i have to calculate the amount of substance concentration of rotenon ( C23H22O6) at 25 C and the solubility of rotenon in water is 15 mg/L at 25 C. How do i calculate it? Thanks in advance.
  6. S

    Which material or substance should I use to mold and make Panpipe?

    Greeting! Sorry for my poor English... I want to mold and make pan flute, I’ve already made it from wood and molded it with silicon. Now, the problem is, since this pan flute has contact with lip and mouth, so it should be made of a hygienic material which is...
  7. S

    Which material or substance should I use to mold and make Panpipe?

    Greeting! Sorry for my poor English... I want to mold and make pan flute, I’ve already made it from wood and molded it with silicon. Now, the problem is, since this pan flute has contact with lip and mouth, so it should be made of a hygienic material which is...