
soluciones
Authored by MARCELA BAQUERO
Chemistry
11th Grade
Used 2+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Disolvemos 45 gramos de amoniaco NH3 en 500 gramos de agua . Calcula el porcentaje en masa de la disolución.
82.5 %
90 %
8.25 %
9 %
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcule el porcentaje en (m/v) para 75g de Na2SO4 en 250ml de disolución de Na2SO4 .
25 %
30 %
23 %
10 %
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
En la solución que se va a preparar ...
El tang es el soluto y el agua es el solvente
El tang es el solvente y el agua es el soluto
El tang y el agua son ambos solventes
El tang y el agua son ambos solutos
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Una solución es ...
Un sistema homogéneo constituido por dos o más sustancias
Un sistema heterogéneo constituido por dos o más sustancias
Un sistema homogéneo constituido por una única sustancia
Un sistema heterogéneo constituido por una única sustancia
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcule la cantidad de disolución de 5 g de LiNO3 de una disolución de LiNO3 al 25% (m/m).
5 g
1.25 g
25 g
20 g
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Una disolución acuosa de hidróxido de potasio tiene una concentración de 30% en masa . Sabiendo que la densidad de la disolución es de 1,3 g/ml calcula la masa de soluto que hay en 100 ml de disolución
3.9 g
9 g
39 g
30 g
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcular los gramos de una sustancia que hay que pesar para preparar una disolución de 100 ml con una concentración de 20g/L
20g
0.2g
200g
2g
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