
Moles y gramos
Authored by Lola Arranz
Chemistry
10th Grade
Used 108+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un mol es una unidad química que corresponde a:
6.02 x1023 partículas
602 x 1023 partículas
6.02 x1023 átomos de un compuesto
6.02 x1023 moléculas de Co
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Para determinar la masa molecular de una sustancia, es necesario:
Conocer las masas de cada elemento que la compone
Convertir gramos a moles y luego sumarlos
Convertir moles a gramos y luego sumarlos
Conocer y sumar las masa de cada elemento que la compone
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
¿Cuántas moléculas de CO2 hay en 3 moles de esta sustancia?
1.81 x 1024
3.25 x 1023
18 x 1023
3 x 1024
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cómo se determina la masa de un mol de NaNO3?peso atómico Na 23 g, N 14 g, O 16g
23 + 14 + 16 + 3
23 + 14 + 16(3)
23 + 14 - 16(3)
23 + (14+16)(3)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un mol de CO2 y un mol de H2O tienen en común:
Su masa en gramos
El tipo de átomos que las componen
La cantidad de partículas que las componen
La cantidad de átomos de oxígeno
6.
MULTIPLE CHOICE QUESTION
5 mins • 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
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Los coeficientes estequiométricos de una reacción química, siempre representan...
gramos
átomos
moles
litros
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