Evaluación Diagnóstica Química Universitaria
Quiz
•
Chemistry
•
9th Grade - University
•
Practice Problem
•
Hard
ALICIA VENTURA
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Es un paso del método científico que establece posibles respuestas o explicaciones, de un fenómeno que pueden ser verdaderas o falsas
Pregunta de investigación
Volumen
Cálculos
Hipótesis
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
A cuántos gramos equivalen 1,3 Kg de NaCl?
13000 g
1030 g
1300 g
130000 g
3.
MULTIPLE CHOICE QUESTION
30 sec • 6 pts
La reacción de un oxido no metálico con agua da origen a:
un ácido
una base
una sal
un metal
4.
MULTIPLE CHOICE QUESTION
30 sec • 6 pts
Es la reacción que se da entre un ácido y una base
electrólisis
saponificación
hidrólisis
neutralización
5.
MULTIPLE CHOICE QUESTION
30 sec • 6 pts
Cuál es el método idóneo para separar la cafeína (mas soluble en un disolvente orgánico) del agua?
extracción
centrifugación
filtración
cromatografía
6.
MULTIPLE CHOICE QUESTION
30 sec • 6 pts
La oxidación es un fenómeno en el que:
se pierden electrones
se pierden iones hidrógeno
se ganan electrones
se ganan iones hidrógeno
7.
MULTIPLE CHOICE QUESTION
30 sec • 6 pts
La masa molar del ácido láctico, sustancia responsable del dolor muscular después de hacer ejercicio y cuya fórmula condensada es C3H6O3 es:
90 g/mol
48 g/mol
29 g/mol
15 g/mol
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