PREGUNTAS QUIZ
Passage
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Diego Palencia
Used 5+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La reaccion del estaño con acido nitrico se presenta mediante la siguiente ecuacion
Sn + 4HNO3 → 4NO2 + SnO2 + 2H2O
con base en la siguiente ecuacion conteste
1:los estados de oxidacion de todos los atomos presentes en el compuesto o elemento de la reaccion en orden son
0 , 1+, 5+, 2- → 4+, 2- + 4+,2- + 4+, 2-
0 , 1+, 6+, 2- → 4+, 2- + 3+,2- + 4+, 2-
2, 1+, 5+, 2- → 4+, 2- + 4+,2- + 4+, 2-
3, 1+, 5+, 2- → 4+, 2- + 4+,2- + 4+, 2-
2.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Balancee la ecucacion
K2Cr2O7 + H2S + H2SO4 → K2SO4 + Cr2(SO4)3 + S + H2O
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determine los estados de oxidacion para las siguientes sustancias :
-sustancia 1(sulfato de potasio):
1+,6+,2-
-sustancia 2 (clorato de potasio):
2+,5+,2-
sutancia 3(Acido clorhidrico):
1+,1-
-sustancia 1(sulfato de potasio):
1+,3+,2-
-sustancia 2 (clorato de potasio):
2+,3+,2-
sutancia 3(Acido clorhidrico):
1+,0-
-sustancia 1(sulfato de potasio):
1+,7+,2-
-sustancia 2 (clorato de potasio):
1+,5+,2-
sutancia 3(Acido clorhidrico):
2+,1-
-sustancia 1(sulfato de potasio):
1+,6+,3-
-sustancia 2 (clorato de potasio):
2+,5+,6-
sutancia 3(Acido clorhidrico):
1+,1-
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Con base en la siguiente ecuacion determine
-Sustancia oxidada
-Sustancia reducida
-Electrones ganados y perdidos
MnO2+HBr-----> Mn + Br2 +H2O
Sustancia oxidada:
-Oxido de manganeso
Sustancia reducida:
-Acido bromidrico
Electrones ganados
2e-
Electrones perdidos
2e-
Sustancia oxidada:
-Acido bromidrico
Sustancia reducida:
-Oxido de manganeso
Electrones ganados
2e-
Electrones perdidos
2e-
Sustancia oxidada:
-Acido bromidrico
Sustancia reducida:
-Oxido de manganeso
Electrones ganados
3e-
Electrones perdidos
4e-
Sustancia oxidada:
-Acido bromidrico
Sustancia reducida:
-Oxido de manganeso
Electrones ganados
5e-
Electrones perdidos
5e-
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Halle el peso formula
Na2SO3
La masa molar de Na2SO3 es 150.10 g/mol
La masa molar de Na2SO3 es 100.05 g/mol
La masa molar de Na2SO3 es 63.025 g/mol
La masa molar de Na2SO3 es 126.05 g/mol
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
convertir en moles 278 g de Na2SO3
2.20 moles
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Convertir en gramos 2,7 moles de CaCO3
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