1. Seleccione 4 elementos químicos
QUIMICA

Quiz
•

annie yolanda espinosa lopez
•
Chemistry
•
12th Grade
•
4 plays
•
Medium
Student preview

5 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Br
Hg
Rb
Z
Bh
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
2. Seleccione los elementos del siguiente compuesto, carbono de calcio CaCO3
Calcio, carbono, oxigeno
Calcio, cobalto
Oxigeno, cobalto, potasio
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
a, d, c, b
b, a, c, d
c, d, a, b
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
4. Calcular la composición porcentual del C y H en el etano (CH3-CH3) si su masa molecular es 30g y las masas atómicas del C y H son 12g y 1g respectivamente.
C = 80%
H = 20%
C = 80%
H = 10%
C = 50%
H = 20%
C = 85%
H = 25%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Una molécula de ácido sulfúrico H2SO4 contiene:
2 átomos de Hidrógeno, 2 átomos de azufre y 4 átomos de oxigeno
2 átomos de hidrógeno, 1 átomo de azufre y 4 átomos de oxigeno
2 átomos de hidrógeno, 0 átomos de azufre y 4 átomos de oxigeno
1 átomo de hidrógeno, 2 átomos de azufre y 4 átomos de oxígeno
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