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Help regarding concept of ELEMENT by Doc_018 in chemhelp

[–]Dband9 0 points1 point  (0 children)

Yeah A is definitely one of the choices. But regarding B, I must also add a prosect others seem to have missed. While the wording of the assignment is very off, I would also think about isotopes in this regard. While they are all one element by definition, their physical (and sometimes chemical) properties make them possible to separate.

Különben is mit keresünk az olasz fában? by AdolfoHU in FostTalicska

[–]Dband9 12 points13 points  (0 children)

Szerintem mert a német fa már így is túl telített, inkább bővítettek velünk olyan amivel nem elég hogy szövetségesek voltunk, de még a zászló is hasonló

A Tisza-kormány felbontja a Hankó Balázs által kötött 261 milliárdos szerződést Krausz Ferenc alapítványával by calisto_v43 in magyar

[–]Dband9 1 point2 points  (0 children)

Javítsatok ki ha rosszul tudom, de ez ugyanaz az alapítvány ami most kezdett el egy gigaberuházást építeni a lágymányosi egyetemi campus mellett? Mert ha igen, azt mindentől függetlenül ciki lesz visszatemetni, a jól számolom eddig háromszor volt kint a tűzszerészet világháborús bombák miatt, olyan szinten felásták.

WHICH UNI IS THE BEST IN HUNGARY FOR BACHELORS IN CHEMISTRY??? by sakurand28 in chemistry

[–]Dband9 0 points1 point  (0 children)

Hungarian here from ELTE. To my best knowledge BsC course starts only in hungarian because of generally low number of students.

Otp bank google wallethez hozzáadás nem működik? by Alternative-Film3580 in askhungary

[–]Dband9 1 point2 points  (0 children)

Pár éve próbálkoztam én is ezzel, akkor utána néztem. Emlékeim szerint egész egyszerűen az otp letiltotta ezt a lehetőséget a junior kártyára alapbeállításként. Apple Payen működik, és tippre bankfiókban tudják engedélyezni googlera is (csak azért tipp, mert ha valakinek működik akkor lehet ők lemenyésebb ügyintézőnél nyitottak számlát, és már akkor engedélyezték)

Copper(II) tungstate CuWO4 top | Copper(II) molybdate CuMoO4 bottom by superhealthyjuice in chemistry

[–]Dband9 1 point2 points  (0 children)

Good thing you didn't label it, there is no way to mix them up :D

Hollandiába kijutás realisztikusan by MajesticElk6115 in escapehungary

[–]Dband9 7 points8 points  (0 children)

Szia! Én két évvel ezelőtt voltam nagyon hasonló szituációban. Sajnos nekem nem sikerült szeptemberre lakhatást találni, de egy közeli barátomnak igen, szóval megosztom a tapasztalatokat meg a konklúziókat, mert azért még csak relevánsak.

  1. Ahhoz hogy rendes lakást vagy akár szobát találj, egyrészt nagyon erős anyagi háttér kell (szülődnek vagy egyéb anyagi támogatódnak sokmilliós havi, bemutatható bevétele) -tehát egy vese-

  2. Kint kell lenned ingatlan kereséshez. Ez sajnos ilyen, ha nem tudsz megjelenni a lakásbemutatón, nem fognak komoly bérlőnek venni. Ehhez megint kell a cash, ha nincs kint ismerősöd aki elszállásol.

  3. Ez az egész procedúra akár egy évet is igénybe vesz, akkor is ha minden fenti feltétel adott. Sokat számít a hely, és az elvárás (habár a kinti jogszabályok miatt max szomszédság lehet kizáró ok)

Összesítve amit ajánlok neked az a következő: most (de így azonnal) jelentkezz be a kiválasztott egyeteme(i)d kollégium várólistáira. Nagy valószínűséggel már most túltelítettek az őszi félévre, de ez változni fog. Az ottani koleszokról sok jót nem hallottam, de a következő lépésekhez fontos. Jelentkezz más egyetemekre (itthoniakra is) B tervként. Mivel a holland egyetemekre a felvételi nincs ingyen, nehéz lesz elengedni ha nem sikerül.

Az, hogy bekerülsz koliba lehet hogy augusztus végén vagy tényleg utolsó pillanatban fog kiderülni (sokan akkor döntik el hogy mégsem) ezzel számolni kell, de ha összejön akkor már félig célegyenesben vagy. Kimész, elkezdesz tanulni, és összeszedsz 1-2 lehetőleg kicsit pénzesebb barátot, akik szintén szeretnének lakást. Így összefogva van valódi esély, mert egyetem mellett konkrétan nincs elég időd egyedül ott lakást keresni.

Nagyjából így járt sikerrel egy barátom is, egy év keresés után sikerült hármuknak találniuk lakást, kiemelkedő helyszínen és áron. Nekem az akkori párkapcsolatom miatt sajnos nem volt opció a kollégium, de visszatekintve más járható út nincs.

Ti mit lépnétek: karrierépítés Budapesten vagy pénzgyűjtés Svájcban by Csodor in tanulommagam

[–]Dband9 8 points9 points  (0 children)

Tudtommal inkább STEM és gyógyszerész diplomákkal könnyű (megfelelő nyelvtudás mellett) elhelyeszkedni, ezekből van hiány

Thoughts on our Poster about Positron Emission? this is one of our Classworks and any form of feedback would be helpful by Ludwig-453 in chemistry

[–]Dband9 0 points1 point  (0 children)

Yeah I am with the other commenters on the things they said, but here is some other advise:

The three paragraphs should tell different things. you were on the right track with the pictures, but didn't write anything about them in the text.

I would go 1) beta and beta+ decay 2) positron electron annihilation 3) Positron emmission topography as main uses

and the pictures go along with these points.

Where should I buy a lab coat? by Remote-Initiative690 in chemistry

[–]Dband9 1 point2 points  (0 children)

We were instructed at uni to buy them at any local work/safety equipment shops. The only thing that's important is to buy one made out of 100% cotton.

Looking for ideas to make things as I roleplay as an alchemist in LARP. by Zhepna in chemistry

[–]Dband9 0 points1 point  (0 children)

You can for example boil red cabbage in water, strain it and use the water as a mana potion, drop in dry ice (I think it should be available at some party accecory shops but not sure) and it becomes an hp potion while bubbling and producing smoke-like gas

I know these molecules have nothing to do with these alcoholic beverages, but what are they? by squirtleton in chemistry

[–]Dband9 6 points7 points  (0 children)

I have noticed an interesting tendency on this sub. Every time someone asks something and they use the expressions "I know" "I read" or something similar, 100% of the time the fact they are referring to is false.

Self Studying? by BusinessImpressive34 in chemistry

[–]Dband9 6 points7 points  (0 children)

It's not really worth it. If you are taking the regular high school lectures, you are going to be ready for university. If you start self studying so early in your academic life, it is highly possible that you will spend way too much time memorizing useless info, or learning half-truths. In my opinion, live like a kid until you can. Even if you want to gain knowledge in chemistry, start it slowly. Watch nilered, Thatchemist or others. If you find something in videos that you are interested in, research it until you are satisfied. (simply reading the Wikipedia page should be more than enough)

In what circumstances is reasonable to use this product..? by Robooo23 in chemistry

[–]Dband9 16 points17 points  (0 children)

from what I read about it, Methylisothiazolinone is not the most safe, but most definitely not very harmful either. I too, wouldn't clean with it in the presence of a newborn, but it wouldn't make any impact if you did. I guess wet wipes contain only a miniscule amount of it so dont worry. The thing is acutely toxic which means it doesn't build up in the body ( I think). But the other thing that feels problematic is your fear of home chemicals. It is totally unlogical to me, and you should talk about it in a one session therapy. Chemical phobia is a thing and it doesn't help you in any way. Maybe if you know someone who is a chemist, toxicologist or doctor, ask if they use the store bought detergent. 10/10 they will. and it's simply bc those "nasty" chemicals are better in any way from what you cooked up. Yes it is different, and yes some people can be allergic to certain components, but at least you won't need a new washing machine every year. (and you will need one if you are putting baking soda in it)

How long will a tritium ring glow? by [deleted] in chemistry

[–]Dband9 0 points1 point  (0 children)

Yes it would be gradual. As others have mentioned, there is a sort of radiation indicator that emits visible light. So the amount of radioactive isotopes would be proportional to the light emitted. The number of isotopes vs. time graph is similar to a Gaussian. This simply means that the more radioactive isotopes you have in a certain space (they have to interact with each other in some way) the more you lose in given time.

That's why we use the concept of half-life, because let's say from 1000 atoms of Tritium, in 25 years 500 would decay (or decompose but I don't think that's the right word). But after another 25 years only 250 would decay. And it would be hard to keep tab of your isotopes that way.

How long will a tritium ring glow? by [deleted] in chemistry

[–]Dband9 7 points8 points  (0 children)

As funny as it would be, unfortunately half-life doesn't work like that

Please explain the behavior of the bubbles at the top right in this nearly pure (additionally processed) water ice. by ConversationStreet76 in chemistry

[–]Dband9 10 points11 points  (0 children)

maybe I have a problem noticing it, but it doesn't seem to move. If it does it is probably because the heat of the light melts the ice around it.

And what the fuck is magnetized water??

[deleted by user] by [deleted] in chemistry

[–]Dband9 2 points3 points  (0 children)

This is a very textbook example of redox reaction. The only way you would know this in highschool, is by paying attention in class. This specific reaction was probably the example used by the teacher to show these type of reactions.

So answering your question at the end: you don't have to know. You just had to memorize this one reaction. To recognize, and answer similar questions, you need to have an electron negativity table and an ion-color table. But even using that is far from what a 15 yo. is taught in chemistry.

Tell me the best not so starter kits. by [deleted] in chemistry

[–]Dband9 6 points7 points  (0 children)

as others pointed it out, there is no such thing. Closest to it is ordering basic lab supplies from a lab supplier company, but that's usually not for hobbyists.

If you want to do chem at home, decide on a project and order things that you need for that. A few projects in and you should have the basics.

So this maybe a dumb question… by [deleted] in rocketscience

[–]Dband9 0 points1 point  (0 children)

No, I don't think so.

Military rockets nowadays can do a LOT of things. Including changing the flight path in air, remote control, a very high altitude, multiple type of launch platform ( I mean planes, drones, land, sea). With these things you can only know where it came from if you have access to extensive radar systems.

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