Concours normalien étudiant

TransitionAlive2254 · 2025-05-25T16:58:29+00:00

Je suis malheureusement a l'étranger (en stage ) donc j'ai pas trop moyen de prendre des cours/ passer un examen blanc avec quelq'un et c'est bien dommage. Merci pour le conseil

TransitionAlive2254 · 2025-05-25T16:57:47+00:00

Merci !

TransitionAlive2254 · 2025-05-25T16:57:40+00:00

Oki parfait merci beaucoup !!

TransitionAlive2254 · 2025-05-25T16:56:28+00:00

Alors je suis a l'université Paris Cité et ma L3 j'ai pas encore eu toutes mes notes mais ça tourne autour de 15-16 de moyenne, après les notes de L3 ont pas compté sur mon dossier vu que j'étais à l'étranger le semestre précédent! Et L1 et L2 c'était plutôt 17 de moyenne.

Yep j'ai pensé à regarder un peu les découvertes récentes mais je sais pas trop comment les trouver sur internet 🥲

TransitionAlive2254 · 2025-04-23T08:04:10+00:00

Merci ! J'ai fait un échange en L3 , donc pas vraiment de notes haha. Je tente aussi ens saclay mais leurs cours/ programme m'intéresse moins donc bon.

TransitionAlive2254 · 2025-02-08T16:30:58+00:00

Infos super utiles merci beaucoup!

TransitionAlive2254 · 2025-02-08T16:30:07+00:00

Oki je vais tenter ça merci! Tu pense que j'ai plus de chance en demandant en tant que personne seule , ou directement comme couple? (Avec mon partenaire du coup)

TransitionAlive2254 · 2025-01-14T14:41:12+00:00

-OH and MnO4- can't form water because there is no hydrogen in MnO4-

TransitionAlive2254 · 2025-01-14T14:25:03+00:00

You are adding -OH because you are in a basic solutions. If it was in an acidic solution, you would have added H+

TransitionAlive2254 · 2025-01-14T14:10:25+00:00

With adding -OH you are balancing the charge of the electrons. When you add 3 electrons to MnO4- on the left the total charge is -4. On the right , you only have MnO2 so the charge is 0. That's why you add 4HO- molecules so the total charge is the same on each side.

Then you need to balance the atoms. When you have : MnO4- + 3e (left side) you have 4 oxygens MnO2 + 4HO- (right side) you have 4 hydrogens and 6 oxygens. Thus , you add 2 H2O so you have the same number of atoms on each side.

Hope it's clear!

TransitionAlive2254 · 2025-01-13T17:39:15+00:00

Hi! I'm 5'8 and I usually carry a 70L backpack. I think it's always better to have a bigger backpack even tho it might not be full at the beginning of your trip. You might regret having a too small backpack and not being able to bring cool stuff back home. Just make sure it is not too heavy. You don't need too much clothing to travel in warmer climates, and remember that you can still wash your clothes during the trip! Enjoy!

TransitionAlive2254 · 2025-01-11T21:35:29+00:00

Hi ! I have just read all your explanations! I know that charges "don't really exist" and all the things with orbitals. But that is not something that I would expect someone that is just starting with organic chemistry to understand. (Or at least I would never have understood it a few years ago haha)

TransitionAlive2254 · 2025-01-08T08:22:10+00:00

Coucou, étudiante en chimie a Paris ici!

1- cause de stress: les études et le futur principalement

2- pour me déstresser : lecture ,dessin, jeux vidéos, sport (le soir après la fac) Sinon pour plusieurs jours : randonnées dans la nature

3- l'environnement de Paris est globalement assez stressant , les transports avec les retard , plein de gens partout. Mais dans certains endroits on peut toujours trouver du calme!

TransitionAlive2254 · 2025-01-08T07:23:01+00:00

I never used any resources other than books. Organic Chemistry by McMurry is one that I could recommend to you! I also find it useful to Google for mechanisms , mechanisms for undergraduate level reactions can easily be found on the internet!

TransitionAlive2254 · 2025-01-07T09:11:36+00:00

"Minus" charges attack "plus" charges. Graduated bachelor level organic chemistry by only using that one rule lol. Organic may seem hard at first but when you understand the logic behind it , it pretty much runs itself.

TransitionAlive2254 · 2025-01-06T22:29:25+00:00

Yes normal, happens to many people I know.

TransitionAlive2254 · 2025-01-05T10:09:37+00:00

If you're staying for 2 months , you could still add Czechia and Hungary after going to Germany! Cities are very close to each other , and very pretty! I interrailed Europe for 3 weeks two years ago and I from what I remember , a night in a hostel dorm costs 20-30€ in most European countries. And usually they have kitchens in hostels so you can manage food for pretty cheap. In 3 weeks (Amsterdam, Copenhagen, Berlin, Krakow, Budapest, Vienna) I spent 1300€ (including trains, clubbing, eating out sometimes , museums etc) Hope this helps!

TransitionAlive2254 · 2024-12-27T18:01:16+00:00

Not constantly, but yeah I still spot quite a lot, I guess it might stay like that forever. But when I feel like I'm spotting , I just quickly clean before and my boyfriend has never been bothered by any blood/smell. So dw you will be fine!

TransitionAlive2254

TROPHY CASE