there’s also another typo (ctrl f accent -> accident)

if you do that you have bigger problems

only if you take notes

this advice is specifically about sulfuric acid. it’s denser than water, so if added to it it will sink diluting itself along the way, while also heating water around and making it float to the surface. if done opposite way, water won’t mix immediately because of large density difference so neutralizatio heat will be deposited on surface between these two boiling water and throwing acid around. this matters less with other acids because less heat is deposited, and in some cases acid is less dense than water. but if you stir the acid quickly, you can do it either way as long as you control temperature. this also is the case when you need to mix two different acids

tldr you can do whatever you want as long as you know what are you doing

e: i’ve checked and heat of dilution is greatest for sulfuric acid, liquid HF is similar per gram, gaseous HCl and HBr are half of that per mol, other common acids 5-10x less esp as aqueous solutions and not neat. also the same happens when diluting acids with other solvents, like alcohols or ethers, these might be even worse because they boil at lower temperature

that must be a particular choice, because ventoy works on both

where i live it’s a part of building code that hot water has to be hot enough that legionella doesn’t survive in it. depending on the place it might be different and whether building is up to code is a separate thing entirely

legionella dies after 2min at 60C tho

depends on your buildings construction, if you have steel piping then it should be fine as long as you boil it

that’s not a waste of energy, but i bet there was also other habit that is: unless you want to specifically evaporate water, things will get boiled just the same on low or high heat. (heating up to boiling point is most economical using high power) there’s zero reason to keep thing boiling on high heat then add water. also, using hot tap water. water heater is much better at heating water than open gas flame, yet i see people insisting on heating entire pots and kettles of cold tap water

mormons got it covered lol. there’s a fair bit of survivorship bias here

technically pv panels are also heat engines. this is why they need cooling

the steam part is in the rest of hydrological cycle

bindeez 2007 recall would be close. tldr childrens toy contained plastifier that turned out to metabolize to ghb, this in turn was put in there as an unauthorized cost cutting measure by manufacturing subcontractor. within 2 weeks of the first incident there was a global recall. note that nobody died and there are no expected long term medical consequences. new batches had added bitrex and undergo qc for this specific contaminant, and brand name was changed

I suspect that we’ll see these “rockets” (missiles?) used for ground based air defenses before too long.

there’s already a ground based launcher for APKWS and FZ275 is compatible with it too

No not really. APKWS or JDAM are retrofits of old weapons with new guidance package. Belgium has no large stockpile of old unguided weapons so they get to design the entire thing from ground up. The principle is similar, its a laser guided beam riding missile shot from a heli or a jet, but APKWS sensors are on leading edge of winglets and this new thing has sensor in nose like a tiny Stugna. overall drop-in APKWS replacement with 10k manufactured per month target

noted, fixed

man if there was a common household chemical, like plastifier, that causes psychosis after couple months of use in small segment of population, you would absolutely hear no end of this [1]. but you see, now it’s an app, oh we’re just throwing up hands, can’t do anything about it and it’s but one of inconveniences that we all have to pay for Progress and Glorious Technocratic Future

[1] i’m thinking here of things like phthalates, bisphenol A, PFOA or paraquat, herbicide linked to increased risk of parkinsons and banned in some countries. their harmful effects need a lot of time to show up and are nowhere as dramatic

he’s trying to become immortal which makes him alchemist at best

If one were to make hydrogen producing solar farm specifically, this could have made sense if there were efficiency gains compared to pv + electrolyser. But there ain’t, and from what i understand won’t be