Prueba de diagnóstico - 3ro BGU
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
John Ambi
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La equivalencia en partículas de 1 mol es el número de Avogadro cuyo valor es ......................
623,0 x 1023
62,30 x 1022
6,023 x 1023
6,230 x 1022
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Calcule la masa molecular de la glucosa (C6H12O6)
170, 99 gr
180,12 gr
98 gr
171.98 gr
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Nombre de la ley que indica que la masa no se crea ni se destruye solo se transforma.
Ley de los gases
Ley de la conservación de la masa
Ley de las proporciones definidas
Ley de las proporciones múltiples
4.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Mediante el método de tanteo balance la siguiente ecuación química KClO3 ------> KCl + O2
K = 3 / Cl = 3 / O = 6
K = 2 / Cl = 2 / O = 6
K = 3 / Cl = 5 / O = 5
K = 1 / Cl = 2 / O = 4
5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
El ................. es la sustancia que se disuelve y es el componente que se encuentra en menor proporción.
soluto
diluyente
disolvente
catalizador
6.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Determine el porcentaje en volumen de una solución de 340 ml que se ha obtenido disolviendo 25 ml de etanol en agua.
% v/v = 10,09
% v/v = 4,61
% v/v = 7,35
% v/v = 9,35
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
.......................... es un tipo de unidad se utiliza cuando la cantidad de soluto es muy pequeña como para expresarla en porcentajes.
Fracción molar
Partes por millón
Porcentaje masa sobre volumen
Molalidad
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