Karyoplasma

joined 2 years ago
[–] Karyoplasma@discuss.tchncs.de 4 points 1 week ago* (last edited 1 week ago) (2 children)

The figure you've linked plots concentration by weight (wt.%), while the alcohol content of drinks is usually given in volume percent (v/v). Ethanol is less dense than water, so a 30% concentration by weight is a higher concentration by volume.

Imagine a 100g solution of 30wt.% alcohol. That means that 30g are ethanol and 70g are water. the 70g of water translate to 70ml volume (density 1g/ml) and the 30g of ethanol translate to 30/0.789 = 38.02ml. So in total, you would have 108.02ml of liquid and the concentration of ethanol by volume would be 38.02/108.02 = 35.2%.

Why it gets wacky at the end: Ethanol freezes at -114°C, water freezes at 0°C, but at specific concentrations, the eutectic composition, the solution freezes at a lower point than either of its constituents. The eutectic point is the lowest possible freezing point of a solution. The formula I gave is not applicable to eutectic solutions and is an approximation based on perfect solutions (which in reality don't really exist).

[–] Karyoplasma@discuss.tchncs.de 4 points 1 week ago* (last edited 1 week ago)

Whoops. Well, I forgot to account for sugar and other stuff which decrease freezing temperature as well, so the result might still be around right. It's an ok ballpark at least. Precisely calculating a solutions freezing temperature when it has that many different solubles is pretty hard.

You're right, I edited it.

[–] Karyoplasma@discuss.tchncs.de 24 points 1 week ago (1 children)

Yeah, that's how it is here as well, so these Jägersicles look fake.

[–] Karyoplasma@discuss.tchncs.de 58 points 1 week ago* (last edited 1 week ago) (14 children)

tl;dr Around -21°C (-9°F). Realistically probably a tad lower than that.

Formula for freezing point depression is:

ΔT~f~ = i * K~f~ * m

ΔT~f~ = freezing point depression in absolute degrees (C or K)

i = van 't Hoff factor, the number of particles the solutes splits into, ethanol does not split, so 1

K~f~ = freezing point suppression constant, for water 1.86°C * kg / mol

m = molality of the solution (aka how much you add), looked it up and it's 11.42 mol for 40% ethanol/water mixture

1 * 1.86 * 11.42 = 21.2412°C

In reality, Jägermeister is not a pure water/ethanol mixture and all that other stuff in there drops the freezing point by a bit as well. Ethanol is the biggest contributor tho. So maybe add 1° or 2° to this.


Is Jägermeister really that green in the US?

[–] Karyoplasma@discuss.tchncs.de 5 points 1 week ago* (last edited 1 week ago)

Did that once, cost me 30 bucks. Didn't see the sign, whoops. I did notice once it was too late tho.

[–] Karyoplasma@discuss.tchncs.de 3 points 1 week ago* (last edited 1 week ago)

Here is a scenario that actually happened, you'll be the judge:

Person A is someone who, to their own admission, wanted to be friends. I know them over persons B and C, long-time friends of mine, A is very close to C. I invite A to a BBQ at my place that B and C are attending as well, they leave me on read, but tell C they'll come, so when speaking to C shortly before the BBQ, I get told that A is coming as well. A then asks, last minute, if they can come too even tho I already know they planned to come. I brush it off as bad communication.

Next month, pretty much the same situation. I invite A, this time telling them that they should drop a yes/no so I can plan for food. Get left on read again. At the day before the BBQ, I ask again if they'll come, they say no. Next day, A asks if they could come despite saying no, okay well whatever. Anyway B and C arrive first and they know that A is coming too. They were told a week ago, I had no idea. Got me pissed, so I text A and ask what the fuck their deal is and now suddenly I am the clingy bad guy. B remains neutral, C takes the side of A telling me, it was my fault that it didn't work out and that A was simply trying to surprise me.

Anyway, I am not friends with C anymore either. Fuck that shit.

Where in OP’s post was this mentioned?

Nowhere, to be fair. The meme just struck a nerve with a past experience of mine and it hurt. My bad.

[–] Karyoplasma@discuss.tchncs.de 26 points 2 weeks ago* (last edited 2 weeks ago) (12 children)

If getting messaged once a week or so to ask if you wanna hang is "smothering" and "risk pushing" you away, then maybe, just maybe, the problem is not the dude messaging.

It's not a tightrope walk, a friendship is built on mutual respect. Feeling left out and lonely because there is no reciprocation whatsoever is normal. Calling this OP's fault is extremely toxic, holy shit. If it's a tightrope walk, you didn't wanna be friends from the very beginning and are bad at communicating your intent.

But isn't minmaxing the fun out of your game to chase the 1% damage increase exactly what RPGs are about?

Don't eat the liver tho. Polar bear liver contains so much vitamin A that it is toxic for humans.

[–] Karyoplasma@discuss.tchncs.de 30 points 2 weeks ago (5 children)

Raise cattle and still be vegetarian for maximum efficiency!

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