17.- Química - Bachillerato General Unificado BGU
Quiz
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Education
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University
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Hard
Multiservicios 2023
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80 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
iguale por redox la ecuación.
HNO3 + Zn → Zn(NO3)2 + NH4(NO3) + H2O
10HNO3 + 4Zn → 4Zn(NO3)2 + NH4(NO3) + 3H2O
10HNO3 + 4Zn → 4Zn(NO3)2 + 4NH4(NO3) + H2O
20HNO3 + 2Zn → 2Zn(NO3)2 + 8NH4(NO3) + 2H2O
22HNO3 + 8Zn → 8Zn(NO3)2 + 2NH4(NO3) + 7H2O
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Con base en la reacción, determine el agente reductor.
FeCl2 + H2O2 + HCl → FeCl3 + H2O
Oxígeno
Hierro
Cloro
Hidrógeno
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine los números de oxidación que correspondan al elemento nitrógeno en la ecuación:
Fe + HNO3 → Fe(NO3)3 + NH4NO3 + H2O
N = 5+, 3+
N = 3+, 5+
N = 5-, 3+
N = 5+,3-
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seleccione las ecuaciones químicas balanceadas por simple inspección.
1.- 4HClO3 + Pb(OH)4 → Pb(ClO3)4 + 4H2O
2.- H2S + K(OH) → K2S + H2O
3.- 3H2CO3 + Bi(OH)3 → Bi2(CO3)3 + 6H2O
4.- H2SO4 + 2Li(OH) → Li2(SO4) + 2H2O
5.- 2HCl + Zn → ZnCl2 + H2
1, 2, 4
1, 4, 5
2, 3, 4
2, 3, 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifique la ecuación balanceada utilizando los números de oxidación.
Cu = 1+, Cu = 0, Cu = 2+, H = 1+, S = 6+, S=2-, O = 2-
4Cu + 4H2SO4 → Cu2S + 2CuSO4 + 4H2O
10Cu + 4H2SO4 → 3Cu2S + 4CuSO4 + 4H2O
5Cu + 4H2SO4 → Cu2S + 3CuSO4 + 4H2O
6Cu + 3H2SO4 → 3Cu2S + CuSO4 + 8H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado los porcentajes, determine la fórmula molecular del compuesto. Considere que el peso molecular es 78 g/mol.
C = 92.30%
H = 7.70%
C2H4
C2H2
C2H6
C6H6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuántos átomos de hidrógeno existen en 45 moléculas de C5H12O2?
12
45
225
540
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