
combustion sti2D
Authored by céline serent
Physics
KG
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
La combustion d'un hydrocarbure libère de l'énergie
chimique
thermique
mécanique
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Les hydrocarbures sont composés (2 réponses attendues) :
d'oxygène
d'hydrogène
de soufre
de carbone
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Lors d'une combustion complète d'un hydrocarbure dans le dioxygène, il se forme (2 réponses attendues):
du dioxyde de carbone
du carbone
de la vapeur d'eau
du dihydrogène
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
La relation permettant de calculer la quantité de matière n d'une espèce chimique connaissant sa masse m et sa masse molaire M est:
n = m x M
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Le pouvoir calorifique s'exprime en:
J.Kg
Kg/J
J/Kg
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Vrai
Faux
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On donne M(C) = 12g.mol-1 et M(O) = 16 g.mol-1
La masse molaire M du dioxyde de carbone CO2 vaut :
28 g.mol-1
56 g.mol-1
192 g.mol-1
44 g.mol-1
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