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Cake day: July 4th, 2023

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  • They fired the cinder blocks to temperature without any metal just to test them and did go through several before they got a number that could be repeatedly heated to temp without crumbling or exploding. They used proper PPE the whole time with professional supervision. edit: also, they were using the cinderblocks as the enclosure, not to support the crucible. they used ceramic alumina rods and stands like those used in pottery kilns for the stands and supports.

    Again, you’re missing the point. The point is people get really fucking creative and don’t necessarily let the danger stop them from doing something. So I wouldn’t bet my health that OOP’s pan isn’t contaminated beyond the seasoning.


  • In my experience, people get really creative when it comes to kitchen/garage chemistry, so all I’m saying is I wouldn’t rule out anything that is physically possible.

    Especially if we’re talking about one’s personal health.

    Edit: since it’s relevant, I literally just taught a lab section that has a research project component, and one group did their project on metallurgy. They were able to use butane Bunsen burner attachments and cinder blocks to make a furnace that was able to melt iron and make some mediocre steel alloys using only stuff you can buy at Home Depot.



  • Chemistry instructor here. It depends on how hot you get the pan. For the most part, the lead is going to stay in the seasoning, like someone mentioned above. However, if it got anywhere close to the melting point of the iron, you could wind up incorporating some of the lead into the iron itself. This seems pretty unlikely, as lead melts at about 325oC and iron melts above 1,500oC, but it’s possible as natural gas and propane burners can get up to above 1,900oC



  • NielsBohron@lemmy.worldtoComic Strips@lemmy.worldEvery theater
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    8 days ago

    Depends on your town. I live in a small tourist town with one cinema and they only play the biggest hits, focusing on the lowest common denominator. I mean, I’m not even sure they screened Sinners, but they definitely played The Minecraft Movie in 4 (out of 14) theaters for months. If I want to go to a different cinema, I have to drive 45 minutes to get to the next town (where the selection still sucks, but at least they’ve got more screens) or 75 min to get to the closest independent theater.



  • Son in Law is one of my partner’s favorite movies, and even being introduced to it in the late 2000’s, I can see the appeal. Peak Pauly Shore. Plus, there really aren’t that many Thanksgiving movies, so it’s right up there with Planes, Trains, and Automobiles for the Mount Rushmore of Thanksgiving movies.








  • Autoionization and the reverse reaction are constantly happening in water, and when the reaction is happening at the same rate forward and backward the system is said to be “at dynamic equilibrium” (aka, stuff is happening, but there’s no net change)

    In pure water, the equilibrium concentration of hydronium and hydroxide are equal, so it’s said to be neutral. At room temperature, that equilibrium concentration is approximately 1*10^-7 moles per liter, which gives a pH of 7 (since pH is defined as the negative log _10 of hydronium concentration)


  • Kinda, but not really. Deuterium exists naturally in more or less the ratio as it has since the solar system first coalesced.

    Also, deuterium is a component of heavy water, but the term “deuterium” actually referred to the specific isotope of hydrogen where the nucleus consists of one proton and one neutron, as opposed to a single proton (which is the more common isotope)



  • That’s why the meme works. It’s not because water autoionizes; it’s because water is amphoteric, meaning it can act as either a Brønsted-Lowry acid or BL base depending on what what it’s reacting with. Put water with ammonia, and water acts as an acid. Put water with acetic acid, and it acts as a base

    Source: I teach college chemistry