De Masa Atómica a Fórmula Molecular
Quiz
•
Chemistry
•
2nd Grade
•
Hard
Laura Huilcapi
Used 114+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En la molécula de Sr3(PO4)2, la cantidad de átomos es
3 átomos de estroncio, 1 átomo de fosforo, 4 átomos de oxígeno
3 átomos de estroncio, 2 átomos de fosforo, 2 átomos de oxígeno
3 átomos de estroncio, 1 átomos de fosforo, 6 átomos de oxígeno
3 átomos de estroncio, 2 átomos de fosforo, 8 átomos de oxígeno
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La fórmula molecular indica:
El número total de átomos por elemento
El número total de elementos que puede tener un compuesto
El número menor de elementos que puede tener un compuesto
La fórmula molecular es igual que la fórmula empírica
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La masa molecular del oxido de calcio (CaO) es:
40 g/mol
66 g/mol
46 g/mol
56 g/mol
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El alcohol metílico (CH3OH), presenta la siguiente composición porcentual:
C = 37,5%; H = 12,5%; O = 50%
C = 30%; H = 20%; O = 50%
C = 27%; H = 22%; O = 50%
C = 47,5%; H = 22,5%; O = 30%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la formula empírica del compuesto que tiene: 40,1% C, 6,6% H, 53,3% O, es:
CHO
CH2O
C2H2O
CHO2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un análisis químico determino una masa molecular de 58 g/mol, si se tiene una fórmula empírica de C2H5, su fórmula molecular es:
CH
C2H5
C3H8
C4H10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La cantidad de átomos de un compuesto, no tiene relación con el subíndice
VERDADERO
FALSO
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