Examen semestral Química 2

Quiz
•
Chemistry, Science
•
11th Grade
•
Medium
Standards-aligned
Horlan Cruz
Used 6+ times
FREE Resource
44 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los subíndices de la formula Ca2CO3 indican:
El número de átomos de cada elemento
El número de moles
El número de electrones
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Peso molecular de la molécula de la glucosa C6H12O6
120 g
24 g
180 g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine la masa molecular de NaCl
40
36.5
58.5
57
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine la masa de 15.5 moles de Mg(OH)2
903.65 gr Mg(OH)2
900 gr Mg(OH)2
899 gr Mg(OH)2
890gr Mg(OH)2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la reacción: MnO2 + 4HCl --> MnCl2 + Cl2 + 2H2O, reaccionaron 22 moles de MnO2 con 40 moles de HCl.
¿Cuál es el reactivo limitante?
HCl
MnO2
H2O
MnCl2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una mol de agua contiene
6.023 x 1023 átomos de hidrogeno
6.023 x 1023 moléculas de agua
6.023 x 1023 átomos de agua
una molécula de agua
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el primer paso para poder calcular el reactivo limitante y en exceso?
Transformar a moles
Determinar la masa molecular
Igualar la ecuación química
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