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ENSTP: Solutions To Chemistry Past Questions - Introduction to 2017
ENSTP: Solutions To Chemistry Past Questions: Introduction Topics
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1 - Introduction to 2017
: 0:01:45 mins
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2 - 2017: Question 1 & 2
: 0:03:35 mins
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1 - Question 1
: 0:05:58 mins
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2 - Question 2 & 3
: 0:03:12 mins
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3 - Question 4, 5 & 6
: 0:02:38 mins
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4 - Question 7, 8 & 9
: 0:03:14 mins
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5 - Question 10, 11 & 12
: 0:04:08 mins
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6 - Question 13, 14 & 15
: 0:03:45 mins
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1 - Introduction
: 0:01:05 mins
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2 - Question 1
: 0:02:07 mins
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3 - Question 2 & 3
: 0:02:10 mins
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4 - Question 4 & 5
: 0:02:25 mins
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5 - Question 6 & 7
: 0:02:16 mins
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6 - Question 8 & 9
: 0:02:54 mins
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7 - Question 10 & 11
: 0:02:13 mins
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8 - Question 12 & 13
: 0:02:29 mins
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9 - Question 14 & 15
: 0:02:06 mins
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1 - Introduction
: 0:01:45 mins
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2 - Question 1 & 2
: 0:03:35 mins
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3 - Question 3 & 4
: 0:03:04 mins
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4 - Question 5 & 6
: 0:03:10 mins
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5 - Question 7 & 8
: 0:02:48 mins
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6 - Question 9 & 10
: 0:03:21 mins
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7 - Question 11, 12 & 13
: 0:02:20 mins
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8 - Question 14 & 15
: 0:02:30 mins
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1 - Question 1
: 0:02:29 mins
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2 - Question 2
: 0:03:17 mins
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3 - Question 3 & 4
: 0:02:55 mins
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4 - Question 5 & 6
: 0:02:35 mins
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5 - Question 7 & 8
: 0:02:30 mins
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6 - Question 9 & 10
: 0:02:30 mins
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7 - Question 11 & 12
: 0:02:50 mins
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8 - Question 13, 14 & 15
: 0:03:16 mins
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1 - Question 1
: 0:02:36 mins
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2 - Question 2 & 3
: 0:05:33 mins
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3 - Question 4 & 5
: 0:02:26 mins
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4 - Question 6 & 7
: 0:01:47 mins
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1 - Question 1
: 0:06:05 mins
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2 - Question 2, 3 & 4
: 0:04:05 mins
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3 - Question 5, 6 & 7
: 0:02:10 mins
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4 - Question 8, 9 & 10
: 0:03:40 mins
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1 - Question 1
: 0:03:04 mins
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2 - Question 2
: 0:01:51 mins
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3 - Question 3
: 0:06:25 mins
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4 - Question 4 & 5
: 0:02:00 mins
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5 - Question 6 & 7
: 0:04:19 mins
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1 - Question 1
: 0:02:33 mins
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2 - Question 2 & 3
: 0:02:22 mins
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1 - Question 1
: 0:04:26 mins
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2 - Question 2 & 3
: 0:02:46 mins
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3 - Question 4 & 5
: 0:03:03 mins
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4 - Question 5 & 6
: 0:03:02 mins
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5 - Question 8 & 9
: 0:03:57 mins
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6 - Question 10
: 0:02:26 mins
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Introduction
Solutions to 2019
Solutions to 2018
Solutions to 2017
Solutions to 2016
Solutions to 2015
Solutions to 2013
Solutions to 2012
Solutions to 2011
Solutions to 2010
Comments
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Ecole Normale Supérieure des Travaux Publics
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Ecole Normale Supérieure des Travaux Publics
Hello madam,
correction: intramolecular forces are attractive forces that holds atoms together witin a molecule or a substance. The are stronger and are usually called chemical bonds.
intermolecular are weaker attractive forces that exist between molecules.
there are not clear-cut guidlines for which intramolecular forces are strongest because they vary widely interms of stength.
1)ionic bonds= attraction between cations and anions e.g Na-cl
2)covalend bond= between shared pairs of electrons and the nuclie e.g F-H
3)metallic bonds= ATTRACTIVE BETWEEN SEA OF DELOCALISED ELECTRONS e.g Fe-Fe
intermolecular can vary alot too, but there are some more recongnized patterns
1)ion dipole-dipole
2)hydrogen bonds
3)vandawall forces
correction: les verbe au pluriel du passé simple ce conjugue avec l'accent circonflex cette errur ne doir pas etre negliger
wewe