
Prueba repaso práctica 2
Authored by Rafael Valdez
Chemistry
University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La densidad relativa o gravedad especifica es:
La relación entre masa y volumen.
Un número adimensional que relaciona la densidad de una sustancia con respecto a otra tornada como referencia (para sólidos y líquidos la sustancia de referencia es el agua a 4 °C donde ρ = 1 g/cm3).
Es volumen por unidad de masa.
La densidad sobre la masa.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A mayor temperatura la densidad de los líquidos.
Aumenta.
Permanece constante.
Disminuye.
Todas son correctas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En las soluciones salinas a medida que aumenta la concentración.
La densidad disminuye.
La densidad relativa disminuye
La densidad aumenta.
La densidad permanece constante.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La densidad es una característica importante de la calidad.
Falso
Verdadero
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La precisión es mayor determinando la densidad por el método:
Picnómetro
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