From: fitcat@optonline.net   
      
   On Monday, August 17, 2015 at 10:08:25 AM UTC-4, Poutnik wrote:   
   > On 08/17/2015 06:35 AM, Grokman Grokman wrote:   
   > >   
   > > Well, this all sounds good, except the video link I posted shows powdered   
   MgO exhibiting a rapid exothermic reaction in HCl. The products MUST be MgCl2   
   and H2O.   
   >   
   > If one uses diluted HCl,   
   > thickened by colloids   
   > and disperged solids from food,   
   > the reaction will be much slower,   
   > driven by diffusion.   
   >   
   >   
   >   
   > --   
   > Poutnik ( the Czech word for a wanderer )   
      
   True, stomach acid is about .1 M HCl, *and* in that video, they didn't specify   
   the HCl molarity, which was surprising. Given the kind of "kitchen-ish" nature   
   of the experiment (styrofoam cups and all), I sort of assumed it was dilute.   
   Classroom experiments I've seen use 1.0 M.   
      
   Which suggests hedging one's bets with MgO with at least taking it on an empty   
   stomach. And grinding the tablet into a powder -- which sort of defeats the   
   purpose of tablets.  lol   
      
   Part of the issue is that supplemental Mg is much more expensive in forms   
   other than MgO. I suspect that absorption claims are contrived, to drive   
   consumers to more expensive forms. They were certainly contrived with calcium.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)