
Química 11
Authored by JEIMY CUESTA
Chemistry
1st - 5th Grade
Used 18+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un mol equivale a:
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
H2O es...
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
¿Cuántos gramos de NH3 se forman, si se hacen reaccionar 100 g de Mg3N2 con 72 g de H2O?
(Masas molares NH3 = 17 g/mol , Mg3N2 = 100.09 g/mol,
H2O = 18 g /mol )
Mg3N2 + 6H2O --> 3Mg(OH)2 + 2NH3
22,6 g
34,6 g
175,6 g
165,6 g
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determina los coeficientes estequiométricos para que la reacción química esté igualada.
a C3H8 + b O2 → c CO2 + d H2O
a=1 , b=5 , c=3 , d=4
a=1 , b=4 , c=3 , d=4
a=1 , b=5 , c=3 , d=3
a=2 , b=5 , c=3 , d=4
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
De entre las cuatro opciones dadas abajo, la especie que al ser colocada en el espacio que falta, balancea correctamente la siguiente reacción, es: PCl3 + 3 H2O _________ + 3 HCl
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Basándose en la estequiometría de la siguiente reacción (masas molares: N, 14 g/mol; H, 1 g/mol):
N2 (g) + 3 H2 (g) → 2 NH3 (g)
La única afirmación que NO se corresponde con dicha reacción, es:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La química orgánica es la ciencia que estudia los compuestos que contienen principalmente:
Fe
Br
Al
C
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