FORMULA EMPIRICA Y MOLECULAR 1
Quiz
•
Chemistry
•
1st - 3rd Grade
•
Practice Problem
•
Medium
Armando Torres
Used 10+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Encuentra la fórmula empírica del compuesto que tiene 28.8% de magnesio, 14.2% de carbono y 57% de oxígeno:
MgCO3
MgCO4
MnCO3
MnCO4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Encuentra la fórmula empírica de un compuesto que tiene 5.373 gramos de hierro y 4.627 gramos de azufre
Fe S2
Fe2 S3
Fe S
Fe3 S4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determina la fórmula empírica de un compuesto cuya masa total es de 2.6 gramos, si se sabe que hay 0.9640 gramos de hierro y lo que resta es de cloro.
Fe Cl2
Fe Cl3
Fe2Cl3
FeCl
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La fructosa tiene una masa molar de 180 gr/mol. Su composición es de 40% de carbono, 6,7 % de hidrógeno y 53.3% de de oxígeno. Encuentra su fórmula molecular.
C3 H6 O3
C H2 O
C6 H12 O6
C3 H7 O3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcula la composición porcentual del óxido de aluminio (puede haber diferencias mínimas en decimales)
52.94% Al y 47.05% O
62.79% Al y 37.20% O
45.76 % Al y 54.23% O
71.68% Al y 28.31% O
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcula la composición porcentual del nitrato de calcio, (puede haber diferencias mínimas en decimales):
24.39%Ca, 17.07%N y 58.53% O
46.51% Ca, 16.27%N y 37.20% O
81.08% Ca y 18.91% N
39.21% Ca, 13.72%%N y 47.05%O
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