
Química
Authored by Harolh Pérez
Chemistry
University
Used 19+ times

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29 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las sustancias que no tienen ni volumen ni forma definido y pueden adquirir la forma del recipiente que los contiene son
A. Liquidos
B. Sólidos
C. Gases
D. Coloides
E. Ninguna de las anteriores
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
77°F en grados centigrados corresponde a
A. 20
B. 25
C. 30
D. 35
E. Ninguna de las anteriores
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si la normalidad del sulfato férrico es 6, la molaridad será
A. 1,5 M
B. 1 M
C. 2 M
D. 3 M
E. Ninguna de las anteriores
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se disuelven 20 gramos de hidróxido de sodio en 500 gramos de agua la modalidad de la solución es (Na:23 H:1 O: 16)
A. 0,5 m
B. 1 m
C. 1,5 m
D. 2 m
E. Ninguna de las anteriores
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para preparar 250 ml de solución 4 molar en hidróxido de potasio la masa de base necesaria es:
(K:390:16H:1)
A. 28g
B. 56g
C. 70g
D. 84g
E. Ninguna de las anteriores
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La cantidad de soluto contenido en 300 g de solución 3 % p/p es:
A. 3g
B. 6g
C. 9g
D. 12g
E. Ninguna de las anteriores
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
28 g de hidróxido de potasio disueltos en 250 ml de solución tiene concentración de:
( K: 39 H: 1O :16)
A. 1 N
B. 1,5 N
C. 2 N
D. 2,5 N
E. Ninguna de las anteriores
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