UD3 TGL REPASO EXAMEN

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Science
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Professional Development
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Medium

Abel Martin Burriez
Used 1+ times
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20 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Indica la respuesta correcta al respecto de la notación científica de la cifra 0.000005.
0.5 *10^-5.
5*10^-5.
5* 10^-6.
50 * 10-7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuántos miligramos (mg) son 25 hectogramos (hg)?
25000 miligramos.
2500000 miligramos.
250000 miligramos
2.5. 10^4 miligramos.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si un átomo tiene 14 protones y 15 neutrones, ¿cuál será su número másico?
14
29
15
22
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué diferencia hay entre dos isótopos del mismo elemento?
Número de neutrones
Número de protones
Número de electrones.
Número de protones y neutrones.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Indica que tipo de reacción es la siguiente: Cl2 + H2 --> 2HCL
Síntesis.
Combustión.
Redox.
Descomposición.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la unidad de la molaridad?
Litros (l).
Gramos/litro (g/l).
Mg/l.
Mol/l.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cómo se denomina la disolución de la que partimos para obtener el resto de diluciones?
Stock
Disolución padre
Disolución madre o stock
Disolución primaria
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