2. Magnitudes molares II° Medio
Quiz
•
Chemistry
•
2nd Grade
•
Hard
Viviana González
Used 9+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tomando en cuenta la siguiente reacción, ¿Cuáles serán los valores de b y d?
a Zn(s) + b HCl(ac) --> c ZnCl2 (ac) + d H2(g)
1 y 1
2 y 2
2 y 1
1 y 2
2 y 3
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
La masa molar del ácido nítrico (HNO3) es 63 g/mol. El significado de este valor es que
Existen 63 moléculas de HNO3 por cada mol de esta sustancia.
cada molécula de HNO3 tiene una masa de 63 g.
La masa de un mol de moléculas de HNO3 equivale a 63 g.
La masa atómica de HNO3 es 63 g/mol.
En un mol de esta sustancia existen, de forma combinada, 63 átomos de los elementos que la conforman.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuál es la cantidad de materia (n) que corresponde a 50 g de carbonato de calcio? (MM Ca = 40 g/mol; C = 12 g/mol; O = 16 g/mol)
50 mol
20 mol
5 mol
1 mol
0,5 mol
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es el isótopo de referencia que se utiliza para determinar las masas atómicas?
El carbono - 12
El oxígeno - 16
El nitrógeno - 14
El carbono - 14
El neón - 10
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Qué volumen ocupan dos mol de un gas, en condiciones normales de presión y temperatura (P= 1 atm; T= 0°C)
11,2 L
22,4 L
33,6 L
44,8 L
56,0 L
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuál es la Masa Molar de la glucosa C6H12O6? (MM C= 12 g/mol; H= 1 g/mol; O= 16 g/mol)
160 g/mol
180 g/mol
200 g/mol
140 g/mol
120 g/mol
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La masa molecular del dióxido de carbono (CO2) corresponde a: (MA C= 12; O=16)
44 g/mol
42 uma
44 uma
42 g/mol
40 uma
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