
REACCIONES QUÍMICAS
Authored by Lina Coso
Chemistry
8th Grade
Used 5+ times

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17 questions
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
¿Cuál de las siguientes opciones sufrirá una reacción química más rápida?
Descomposición del NH3 a 20 ºC
Descomposición del NH3 a 100 K
Descomposición del NH3 a 300 K
Descomposición del NH3 a 25ºC
2.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
A que corresponde la siguiente equivalencia
1 MOL = 6'022 · 10 ^23 PARTÍCULAS
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cálcula la masa molecular del NH3 ( N: 14 ; H: 1)
17
15
13
18
4.
MULTIPLE SELECT QUESTION
2 mins • 2 pts
Ajusta la siguiente reacción química:
Fe + O2 --> Fe2O3
( puede haber más de una opción correcta)
2 Fe + 3/2 O2 --> Fe2O3
4 Fe + 3 O2 --> 2 Fe2O3
2 Fe + O2 --> Fe2O3
Ya está ajustada
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuántos moles hay en 2'5g de CO2?
( Mr(O) =16 ; Mr(C) = 12)
17'6
0'057
110
0'056
6.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Identifica cual es la correcta
Mr = masa · mol
Mr = masa / mol
Masa = Mr/mol
Mr = mol/masa
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La Masa molecular de una sustancia es el producto de las masas de los átomos que lo componen
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