QUÍMICA
El CO2 es
EXAMEN SEMANAL ORDINARIO TURNO TARDE 17-08-24
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80 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
QUÍMICA
El CO2 es
Anhidrido carbonoso
Oxido de carbono (IV)
tetraoxido de carbono
Anhidrido carbónico
Oxido de Dicarbono
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El Hidruro plúmbico tiene la siguiente formula:
PbH
PLH
PlH
Pb4H
PbH4
Answer explanation
Plomo valencia +4 se la da al hidrogeno de valencia -1
PbH4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El Cloruro de Sodio tiene la siguiente formula:
NaClO3
SoClO
ClSo
ClNaO
NaCl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuál es la suma de todos los coeficientes de la siguiente formula: Fe2O3 + H2O → Fe(OH)3
10
6
8
12
14
Answer explanation
Fe2O3 + 3H2O à 2Fe(OH)3
1+3+2=6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cual es el coeficiente del agente reductor
Ag + HNO3 →AgNO3 + NO + H2O
1
5
2
4
3
Answer explanation
Ag → AgNO3
0 +1
Se oxida = agente reductor
3Ag + 4HNO3 → 3AgNO3 + NO + 2H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El número de oxidación del fosforo es:
H3PO4 es:
0
+5
+2
+3
+1
Answer explanation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcula la Normalidad del H3BO3 disueltos en 500 ml de agua
82.4
20.6
10.3
41.2
26.4
Answer explanation
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