Mensual 2 Química 12mo grado 2021
Quiz
•
Chemistry
•
1st Grade
•
Easy
Jesus Piñate
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5 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Calcular la molalidad de una disolución de 95 gramos de ácido nítrico (HNO3) en 2,5 litros de agua.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Calcular la molalidad de una disolución de 90 gramos de glicerina (C3H8O3) en 200 gramos de agua
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Determinar la molalidad y la molaridad de una disolución formada al disolver 12 g de hidróxido de calcio, Ca(OH)2, en 200 g de agua, H2O, si la densidad de esta disolución en 1050 kg/m3. Pesos atómicos: (Ca) = 40 u; (O) = 16 u; (H) = 1 u
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Sea una disolución de 70 gramos de glicerina (C3H8O3) y 20 gramos de metanol (CH3OH) Calcular la fracción molar de cada uno de los componentes.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Se disuelven 40 gramos de etanol en 60 gramos de agua. Calcule la fracción molar de la solución, la molalidad y la concentración m/m.
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