SP 10 chimie
Quiz
•
Chemistry
•
10th Grade
•
Easy
Château Château Eğitim
Used 2+ times
FREE Resource
11 questions
Show all answers
1.
OPEN ENDED QUESTION
3 mins • 1 pt
Dans les composés A2B et AyBx le rapport des masses de B qui se combine avec la même masse de A, est l/4. Déterminez x dans la formule de AyBx .
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Les éléments A et B forment deux corps composes différents.Dans le premier composé 11,2 gde A se combinent avec 4,8 g de B.Dans le second 5,6 g de A se combine avec 1.6 g de B. Si la formule du premier composé est A2B3, déterminez la formule du second composé.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Calculez le nombre de moles contenus dans 11,2g de fer.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
La masse de 0,3 mol de CxH2xOx est 27 g. Déterminez x? (C:12 H:1 O:16)
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Les éléments X et Y forment deux corps composes différents.Dans le premier, il y a 50% deX.Dans le second 60% de Y. Si la formule du premier composé est X2Y, déterminez la formule du second composé.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
16 g de XO3 contient 0.6 mol d'atomes d'oxygene. Quelle est la masse molaire de X?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Quelle est la masse de trioxyde de soufre(SO3) qui contient la même quantité d'atomes qu'une mole d'eau? ( H = 1 O = 16 S = 32 )
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