
evaluación de química 5to de sec.
Quiz
•
Chemistry
•
1st Grade - University
•
Hard
Fernando Fernández
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál será el peso molecular del acido sulfúrico?
990 gr/mol
98 gr/mol
27 gr/mol
100 gr/mol
ninguna de las anteriores
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La formula correcta del carbonato de sodio es
CO2
CaCO4
CaCO3
HCl
ninguna de las anteriores
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuáles son los elementos principales de todo ser vivo?
metano y agua
sal y azucar
C,H,O,N.P
H2O
HNO3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La composición porcentual
no admite sales
admite sales
establece el % en masa
establece el % en iones
ninguna de las anteriores
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuál será la composición porcentual del agua?
% H = 15% , % O = 20%
% H = 11,11% , % O = 88,89%
% H = 150% , % O = 20%
% H = 6% , % O = 94%
% H = 1% , % O = 2%
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Los coeficientes de igualación de la siguiente ecuación son
3,1,2,3
3,3,2,1
3,1,1,3
3,3,3,3
1,2,3,4
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
En la determinación de las formulas moleculares , uno de los pasos en el procedimiento es
dividir todo por el coeficiente de mol
dividir la masa o porcentaje de la muestra con su peso molecular
dividir el peso molecular con un mol
multiplicar siempre por dos
ninguna de las anteriores
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