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Blabla 15-18 ans
Sujet : Physique/Chimie
1
PSP-3004
Niveau 5
21 janvier 2009 à 15:26:58

Une solution permettant de lutter contre les démangeaisons contient, entre autres composés, de la glycine C₂H₅O₂N à raison d'une masse m= 1,44 g pour 100mL de solution.

1) Déterminer la quantité de matière de glycine contenue dans la solution

2) En déduire la concentration molaire en glycine de la solution

Rolandculet
Niveau 6
21 janvier 2009 à 15:29:12

Oulà je comprends pas trop "C₂H₅O₂N"

Mais applique bêtement les formules n=m/M et C=n/V. :noel:

c088f33ddabeda2
Niveau 6
02 mai 2009 à 05:57:54

http://www.speedpseudo.com/ :cool: Créez vos pseudos en 10 secondes avec Speedpseudo! http://www.speedpseudo.com/ :cool: Créez vos pseudos en 10 secondes avec Speedpseudo! http://www.speedpseudo.com/ :cool: Créez vos pseudos en 10 secondes avec Speedpseudo! http://www.speedpseudo.com/ :cool: Créez vos pseudos en 10 secondes avec Speedpseudo! http://www.speedpseudo.com/ :cool: Créez vos pseudos en 10 secondes avec Speedpseudo! http://www.speedpseudo.com/ :cool: Créez vos pseudos en

chris_9
Niveau 8
02 mai 2009 à 22:25:07

http://speedpseudo.infos.st/ pseudo en 5 sec :noel:

Aimincorp556
Niveau 1
02 mai 2009 à 22:49:20

http://www.noelshack.com/com/voir/130309/Talc073156.JPG :ok:

KazPatafta
Niveau 3
02 mai 2009 à 22:56:46

1) n = M/m

M = 2x12 + 5x1 + 16x2 = 61
m = 1,44g

n = 31/1.44

Je suis pas une bete en chimie donc doit y avoir une erreur peut etre :ok:

Bigtoasty
Niveau 1
02 mai 2009 à 22:56:58

Voici pour vous, mes deux dossiers d'image p*rn et soft :

http://rapidshare.com/files/223656652/Fap.rar
Dossier de 150 images ~

http://rapidshare.com/files/228403062/Fap_V2.rar
Dossier de 250+ images ~

Ps : No virus, j'ai pas de screen pour le dossier Fap, car il n'est plus sur mon PC ( formatage spotted ), mais pour le FapV2 :
http://www.noelshack.com/voir/130309/ScreenShot001006719.jpg
Vous n'avez qu'à faire un scan anti virus avant d'ouvrir l'archive si ça vous rassure :ok:
Le seul truc qui peut vous paraitre suspect dans le dossier est un fichier "Thumbs.dll" ( http://www.google.fr/search?client=firefox-a&rls=org.mozilla%3Afr%3Aofficial&channel=s&hl=fr&q=thumbs.dll&meta=&btnG=Recherche+Google , aucun danger, juste un fichier créée par Winrar pendant la création de l'archive ).

Voilà, enjoy :hap:

Désolé de la pub, mais impossible de créér un topic.

fadademath92
Niveau 10
02 mai 2009 à 22:57:12

trop facil ton exo mdr !!

TrollMoliere
Niveau 1
02 mai 2009 à 22:58:40

vu le niveau des questions... go -15.

lateofthepier
Niveau 10
02 mai 2009 à 22:59:38

Niveau 2nde :ok:

Aimincorp195
Niveau 1
02 mai 2009 à 22:59:40

http://aimincorp.free.fr/ :)

JeRouleEnScoot
Niveau 7
02 mai 2009 à 23:05:08

Oui niveau seconde :ok:

T'appliques simplement n = m/M et c = n/V

crayshy94
Niveau 5
02 mai 2009 à 23:05:39

<l

moisegpa
Niveau 7
02 mai 2009 à 23:07:07

C'est moi où la création de nouveaux topic buggent :rire:

chaud le rouge partout

_c17h21no4
Niveau 6
02 mai 2009 à 23:07:28

Go topic rouge :noel:

_0wned_
Niveau 7
02 mai 2009 à 23:07:32

Le rougeeeee :bave:

Anarchy-Officer
Niveau 1
02 mai 2009 à 23:07:40

Mes Frères...

This

Is

ANARCHY

MES FRÈRES L'HEURE EST VENUE

REJOIGNEZ NOUS DANS NOTRE LUTTE CONTRE LA TYRANNIE MODÉRATRICE

NOUS VENONS SUR CE FORUM POUR NOUS DÉTENDRE PAS POUR AVOIR PEUR D'ÊTRE BANNIS ET POUR REHAUSSER L'EGO DÉMESURÉ DES MODO

REFAISONS SOUFFLER UN VENT DE LIBERTÉ

http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php

ENSEMBLE NOUS VAINCRONS LES TYRAN
ENSEMBLE NOUS REPRENDRONS LE 15-18
ENSEMBLE NOUS VAINCRONS LA PEUR

ENSEMBLE MES FRÈRES

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ENSEMBLE MES FRÈRES

ENSEMBLE MES FRÈRES

NOUS AVONS VOULU TROUVER UNE SOLUTION PACIFIQUE, MAIS ILS NE NOUS ONT PAS ÉCOUTÉ

CE QUE NOUS VOULONS C'EST LA LIBERTÉ

LA LIBERTÉ D'OPINIONS
LA LIBERTÉ D'OPINIONS
LA LIBERTÉ D'OPINIONS

LA LIBERTÉ DE POSTER
LA LIBERTÉ DE POSTER
LA LIBERTÉ DE POSTER
LA LIBERTÉ DE POSTER

ENSEMBLE REPRENONS LE 15-18

ENSEMBLE REPRENONS LE 15-18
ENSEMBLE REPRENONS LE 15-18
ENSEMBLE REPRENONS LE 15-18
ENSEMBLE REPRENONS LE 15-18

ENSEMBLE REPRENONS LE 15-18

ENSEMBLE REPRENONS LE 15-18

ENSEMBLE REPRENONS LE 15-18

BRAVO LES MODO
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REGARDEZ VOTRE BEAU FORUM
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MAINTENANT

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POUR UN MEILLEUR 15-18

NOUS VENONS SUR CE FORUM POUR NOUS DÉTENDRE PAS POUR AVOIR PEUR D'ÊTRE BANNIS ET POUR REHAUSSER L'EGO DÉMESURÉ DES MODO

POUR UNE MEILLEUR ENTENTE

RÉVOLTEZ VOUS

REFAISONS SOUFFLER UN VENT DE LIBERTÉ SUR LE 15–18

http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php
http://speedpseudo.com/speed-pseudo.php

1
Sujet : Physique/Chimie
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