
SM10 Chimie
Authored by Château Château Eğitim
Chemistry
1st Grade - Professional Development
Used 2+ times

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8 questions
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1.
OPEN ENDED QUESTION
3 mins • Ungraded
Combien de molécules d’ammoniac NH3, contiendront autant d’atomes d’hydrogène que 0,3mole d’eau?
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2.
OPEN ENDED QUESTION
3 mins • Ungraded
3,2 g de gaz dioxygène avec 5,6 g d’un gaz G contiennent au total 12,04x1023 molécules. Quelle est la masse molaire du gaz G? O :16
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Combien d’atomes de chlore occuperont un volume de 44,8L dans les C.N?
1xNA
2xNA
6xNA
4xNA
4.
OPEN ENDED QUESTION
3 mins • Ungraded
Combien d’atomes seront contenus dans 13 cm3 d'alluminium dont la masse volumique est de 5g/cm3 ? (Al:13)
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5.
OPEN ENDED QUESTION
3 mins • Ungraded
La combustion de 6mol de gaz CH4 et de C2H4 donne 4 mol de gaz CO2.
a) Calculez le nombre de mol de CH4.
b) Calculez levolume de gaz C2H4 dans les conditions normales.
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6.
OPEN ENDED QUESTION
3 mins • Ungraded
La réaction de l’eau sur le sodium Na donne le dihydrogène et un corps compese inconnu. Ecrire l’équation. Dans les conditions normales, quel volume de dihydrogène obtiendra-t-on à partir de 12,04 1022 atomes de sodium?
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7.
OPEN ENDED QUESTION
3 mins • Ungraded
On fait réagir des masses identiques de chlore Cl2 et de sodium Na, on obtient 0,2 mol de NaCl. Trouver masse de réactif en excès ? (Na:23 Cl:35)
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