
PROBLEMAS MOLES Y REACCIONES QUÍMICAS (ESTEQUIOMETRÍA)
Authored by PABLO MARTÍNEZ
Chemistry
KG - 10th Grade
5 Questions
NGSS covered
Used 27+ times

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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
¿Cuál es el ajuste de la reacción H2 + O2 --> H2O?
H2 + 2O2 --> 2H2O
H2 + 2O2 --> H2O
2H2 + O2 -->2 H2O
2H2 + 2O2 --> 2H2O
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
¿Cuántos moles de átomos de carbono hay en 36 g de Carbono? Masa atómica C= 12 g/mol
0,5
1,0
2,0
3,0
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
¿Cuántas moléculas hay en 9 g de agua? Masa molecular H2O= 18 g/mol
6,022 x 10-12
6,022 x 1012
3,011 x 10-23
3,011 x 1023
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Un recipiente contiene 200 g de dióxido de carbono, ¿cuál es el número de moles? Masa atómica C= 12 g/mol; Masa atómica O= 16 g/mol
4,54
45,4
0,45
454
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Con base en la siguiente reacción (ya ajustada):
2HCl + Ca → CaCl2 + H2
Con 40 gramos de HCl, ¿cuántos gramos de CaCl2 se van a producir?
(Masas atómicas: Cl: 35 g/mol; H: 1 g/mol; Ca: 40 g/mol
61,6 g CaCl2
0,55 mol CaCl2
61,6 mol CaCl2
0,25 g CaCl2
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