
Estequiometria
Authored by Karina Hernandez
Chemistry
9th Grade
Used 7+ times

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7 questions
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1.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
La masa de 1 mol de Fe2O3 es ()g
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A partir de la siguiente ecuaciòn:
CH4 + 2O2 -- CO2 + 2H2O
Indica la forma correcta de interpretarla
1 mol CH4 + 2 mol O2 = 1 mol CO2+ 2 mol H2O
1 molècula CH4 + 2 molèculas O2 = 1 molècula CO2 + 2 molèculas H2O
3.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
¿Cuál es la masa de 2 mol de KOH?
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
En 36 g de H2O hay...
1,204 x 1024 molèculas.
1,204 x 1024 átomos
6,02 x 1023 molèculas
12,04 x 1024 molèculas
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La masa de 1,806 x 1024 molèculas de eteno (C2H4) es
28 g
84 g
96 g
48 g
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2 mol de propino y 6 mol de dioxìgeno
3 mol de propino y 8 mol de dioxìgeno
2 mol de propino y 8 mol de dioxìgeno
2 molèculas de propino y 8 molèculas de dioxìgeno
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Al reaccionar hierro (Fe) con oxígeno gaseoso (O2) se produce Oxido de Fe III (Fe2O3).
Indica que ecuación química representa dicho cambio desde el punto de vista fenomenológico.
2Fe2O3 = 4Fe +3 O2
2Fe(s) + 3O2(g) = 2Fe2O3(s)
4Fe(s) + 3O2(g) = 2Fe2O3(s)
4Fe + 3O2 = 2Fe2O3
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