there was a time when anthropic models would refuse any question related to medicine. not because they care that hard, mind you. it’s because that bloated startup is ran by cultists and they were worried that chatbot will come up with a bioweapon
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
technically pv panels are also heat engines. this is why they need cooling
the steam part is in the rest of hydrological cycle
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
Ye i’ve seen that before. Perennial problem with this aporoach is that efficiency is capped below what pv panel can get and also now instead of wiring you need to install purified water + hydrogen plumbing. Also while you just can use only excess of generation for electrolysis, this is always on
i heard a story about varnish factory that failed quality checks after one old guy got fired, he was a smoker and used to spit in the main reactor. some enzyme from saliva made it shinier
it will vary, just after distillation (or RO/ion exchange) it should be closer to 7 then it goes down as carbon dioxide gets absorbed. that’s why it’s buffered everywhere where it matters
in my case the size of the system was so small they didn’t have that excuse, yet they were only ever able to get correct results after experimental data was handed over to them, zero predictive power, useless
seeing that jargon file has an extensive page on retrocomputing feels like figuring out that there were archeologists in ancient egypt
some people would tell you that we can simulate small bits of chemistry but it’s flat out wrong (i might be biased as i’ve wrangled for a year with computational chemists about results that don’t conform to reality) and even then errors are so large that’s it’s useless
and then some bozo says that biology is just complicated chemistry and chemistry is just complicated physics and we can simulate physics
curious thing is that i never hear biologists or chemists saying that, only some physicists and techbros. just trying to simulate your way out of small organic chemistry problems will make you even more hopelessly lost than you were before
maybe it introduces some critical contaminant (many such cases)
that’s a weird metric to look at because drug approval happens only like, 5-15 years after end of preclinical research, sometimes longer
clinical trials also take fuckton of money but this might be also post-2008 cuts that we only see effects of now
they did a whoopsie, lead 210 comes from uranium 238. every 220 years radioactivity drops 1000x which means that 200-300 year old lead is mostly fine. copper notably doesn’t have this problem, is dense and is refined to high degree, at scale. it’s good enough to shield most of relatively low energy radiation from that isotope (less than 50kev gammas). couple mm of copper should be plenty for many applications
different tool for a different purpose. water has a large heat of evaporation which is something that allows for more compact turbines
big advantage is that molten salt allows for energy storage for nighttime
Not really, there are also polyesters and polyamides. These used here are hydrocarbons, and turns out there’s a tool for that. You see, in oil refining there’s a lot of stuff manufactured that it’s useless without further processing, as in, after distillation and vacuum distillation you might end up with half of weight of oil or more as asphalt or heavy oils that barely can be sold. So in order to make them useful, these products are broken down into smaller molecules, and then are separated again. What they’re doing is similar to process called hydrocracking that is commonly used to turn heavy vacuum distillates, think something like motor oil or other greases, to diesel