Estequiometria 5to
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Lilian Lopez
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una mol de particulas equivale a .......
6,02x1023 particulas
1x1023 particulas
6,02x 10-23
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine la masa molecular del NaOH
(Masas atomicas Na=23 H=1 O=16)
40 uma
50 uma
23 uma
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determinar el numero de moles (n) de Helio que hay en 20 gramos de este gas si se sabe que su masa atomica es He=4
80
20
5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El numero de Avogadro es igual a 6,02x10-23
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para calcular el numero de moles de una sustancia se utiliza la fórmula:
n =m/M
Donde m: masa y M: masa molecular
Verdadero
Falso
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcular la masa molecular del CO2 , si C=12 y O =16
28
44
40
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
En la lluvia ácida cae soda
cáustica (NaOH)
Falso
Verdadero
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sin oxígeno no puede producirse
un incendio.
Verdadero
Falso
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