I sail the high seas of the Lemmyverse, posting snarky + Lefty comments

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Joined 1 year ago
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Cake day: May 7th, 2023

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  • I did a little research and the answer is pretty interesting!

    Originally, chemists assigned hydrogen a mass number of 1, and used that assumption to derive the masses of the other elements. Today we definine “1” as being 1/12 of the weight of Carbon-12 (which is very close to the average weight of hydrogen we use today)

    As to the relative frequencies, they can be different at different points on earth, this Chemistry SE answer goes into a lot more detail.

    If you have never done “stoichiometry” before it may not be obvious but the periodic table average weights are essential for going from “I have x grams of substance” to “I have x number of atoms/molecules of substance” and from there you can use the equation of your target reaction to precisely predict the outcome of a chemical process. If you were doing very high precision chemistry, the differences in isotopic ratio in your sample vs the standard values could introduce an error but I would guess most of the time it is insignificant.











  • It’s not natively supported in Lemmy yet but lots of third party apps can. If you’re on Android Sync and Connect both support it.

    You’re not wrong about the tankie thing, I’d say it’s the major conflict in the “threadiverse” right now.

    As you can see, I’m on lemmy.ml on this account. The moderation of the server is definitely weird. Since it is the flagship server there’s more diversity of thought than you would expect.

    If you want to avoid the tankie trolling and brigading the instances you want to block are lemmygrad.ml and hexbear.net