John Cuthber

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John Cuthber last won the day on June 18

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About John Cuthber

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    Chemistry Expert
  • Birthday 11/10/1965

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    England
  1. iodometric or iodimetric

    I think it depends on the other experimental details. Can you post them? If I was trying to measure I2 in CCl4 I might start with a colourimetric assay unless I really needed good precision.
  2. iodometric or iodimetric

    Unless, of course, it isn't. https://www.quora.com/What-is-iodimetric-titration-and-how-is-it-different-from-iodometric-titration
  3. Bicycle transmission...

    How (in)efficient is a "traditional" bike chain/ sprocket drive?
  4. So who's going to win the world cup?

    I hope so; it's been cluttering up two of our major TV channels.
  5. Try to make coal briquettes catch fire quicker

    So, once again, Where? Quite possibly. It's not impossible to light briquettes- just a PITA. If his were easy to light he might have a USP. And, it's plausible that he might sell two sorts Easy to light- for starting the fire and ordinary- cheap ones for keeping it going. In which case he might be very successful It might be an idea to wait till he comes back with more information. Unless he lives somewhere very dry, the tendency of NaNO3 to go damp is going to be a big problem
  6. Try to make coal briquettes catch fire quicker

    Do you know anyone who lives in an oxygen free atmosphere where such a question would be important? Or are you just not paying attention to this bit?
  7. Try to make coal briquettes catch fire quicker

    Did it somehow escape your notice that charcoal already has an inbuilt flammable ability? Somewhere between a fuel with no nitrate- which is hard to light and gunpowder which is too easy to light, there may well be a mixture that's satisfactory. https://en.wikipedia.org/wiki/False_dilemma Studiot; I didn't ask if the OP had used the phrase "industrial use"- he plainly had. I asked where he had suggested that the briquettes were for industrial use. It seems to me that the OP has an industry that makes + sells briquettes- quite possibly to domestic consumers/ householders. Their customers would like a product that's easier to light. One way to achieve that would be to incorporate sodium nitrate into the briquettes. And he's asking for a process to Now, as it happens, I don't think that's the best way forward, not least because ammonium nitrate might do the job just as well (or badly) as sodium nitrate. But that doesn't mean that the briquettes are sold to industry (they might be, but as has been pointed out, industrial furnaces often have other mechanisms for lighting them). So, does anyone have any reason to show why I'm mistaken about my interpretation? And does anyone actually have an answer to his question- how does he make sodium nitrate?
  8. Who am I?

    Well, you could ask that as a first question...
  9. Try to make coal briquettes catch fire quicker

    No. I'm observing they make briquettes which catch fire slowly Where?
  10. Nickel?

    W(hy all) the b(rack)ets? At the temperatures where nuclear fusion takes place, everything vapourises. The only way you can get solid nickel is to make it in a star - where gravity will keep it together in spite of being vapour- and then release it into the cosmos when the star explodes. Then wait for gravity to bring the "ashes" together.
  11. Mueller indictments (split from Collusion with Russia)

    We are. And I think you mean "In light of..."
  12. Try to make coal briquettes catch fire quicker

    There is a difference between "They wish to burn their product " and "They wish their product to burn" And so did my grandmother, but if you are selling to a market that does not have access to gas, you might want to make your briquettes easier to light. Why are you assuming they are selling to industry?
  13. "Please read entire post there is very important work in some of the parts" Just post those parts.
  14. Most don't. In the event of a collapse of civilisation, the risk of skin cancer or rickets would be pretty low down the list of problems people face. It wouldn't be enough to drive anyone to migrate. I have white skin, but if I was "one of the few survivors", I'd move South. It's warmer and easier to farm with a longer growing season.