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John Cuthber

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John Cuthber last won the day on March 31

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About John Cuthber

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    Chemistry Expert
  • Birthday 11/10/1965

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  1. LOL Apart from island states, almost all national borders are arbitrary.
  2. There can only be something like 21 million bitcoins. Of those nearly all (about 18 million) have been "minted". So the idea that people will continue to spend additional resources after they are all made just shows a total failure to understand the way things work. Not much point continuing until the OP learns what he's talking about.
  3. Was there any part of that which you thought I didn't already know? Yes and no. While we usually consider CaO to be "ionic", if you look at the electron distribution (by Xray diffraction) you see that, on average, not all of the 2 electrons are on the oxygen. If you choose an easier ion to oxidise- for example iodide and a metal that's harder to oxidise (or easier to reduce) like lead or silver you get an "ionic" solid, but (unlike the iodide, or silver, ions) it's yellow. That's because the energy from a blue photon is high enough to kick an electron from the anio
  4. OK. In summary; saying that the world (as we know it) ends in 10 years* is believed by some Democrats (Though, apparently not the Party leader), but that isn't Dem policy. And saying that science is wrong/ bad is a thing** some Republicans (Including the Party leader) believe and it is Rep policy. * a statement that may well be true ** a statement that is not true Do you see the difference? That's essentially why Nature supported one party, rather than the other.
  5. So, your point was that the cliffs are mainly made from a highly soluble thing that doesn't dissolve.
  6. Really? I have seen people make the prediction that, if we do not change things, "the world as we know it" will end in 2031. That's not without a scientific basis, though the experimental uncertainty is large. Assuming you didn't make up your claim and there really is "plenty of evidence of Democrats claiming the world will end in 12 (10 now?) years." then lets see it. And, more importantly, if you can find them, can you show that (1) it's anti science and (2) it's Democrat policy to say so. Whereas the GOP is on record for trying to extinguish c
  7. OK let's start with the fact that a link to a video of a man saying something is not "anecdotal". Are you aware that Trump is also a republican? So there's at least two. But that's hardly the point. I really don't need to go through the record of every Registered Republican and find specific evidence for each individual. It is clear that many of the Trump voters must be similarly anti-science or they wouldn't support the man who suggested injecting bleach and said that the pandemic would vanish when Spring arrived. Are you seeking to defend his position?
  8. The White Cliffs of Dover indicate that the solubility isn't just down to the Ca++ ion. The Ca++ ions in water are surrounded by a bunch of water molecules which are more or less firmly attached.
  9. Yes, it would be cheap, simple, low tech and accessible. But it would not work. The potassium oxide vapourises at temperatures high enough for potassium carbonate to decompose. On the other hand, you can use a simple charcoal fire furnace to make quicklime. And then you can add water to make the calcium hydroxide needed for causticisation. The by-product is calcium carbonate and you can reuse that by putting it in the furnace again. Much as I would like to claim credit for this rather clever system, it isn't my invention. The process was used for centuries.
  10. It's hard to see how you can get that poor a grasp of science without being actively biased against it. No. Do you understand the idea of quoting an (additional) example to illustrate a point? It's the figure Republican House Representatives; you would like to think that's the clever ones. It's important to recognise that, for most Americans, cuts to public services make their lives worse, so the Republican parity has to rely on deceit in order to get elected. Part of that process is the undermining of objective truth, and one big part of that is the role of scien
  11. Do you understand the distinction between " we can not imagine" something and " we recognise the physical impossibility (or impracticability) of something? Your idea seems to be a less practical version of this. https://en.wikipedia.org/wiki/Electrodialysis
  12. The body does expend energy in maintaining pH differences- pumping hydrogen ions into the gut makes it acid and takes energy. But I don't think it's a big part of the energy budget.
  13. It depends... For example, it's probably safer to abstain while driving down the motorway.
  14. One of the commonest ways of obtaining potassium carbonate is to leach it from the ashes of a wood fire. What does that tell you about how well it is absorbed by charcoal? While you could separate it from water by reverse osmosis, I think it's going to be easier to let the water evaporate.
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