
Repaso 2. Tecnología 4
Authored by Bruno Valdez Salinas
Chemistry
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Se diseñó una nueva escala Junior (°J), donde 40 °J equivalen a 80 °C. Si en dicha escala en agua congela a 20 °J ¿A qué temperatura ebullirá el agua?
2.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Si en un recipiente seco y vacío de masa 200 g y volumen de 2000 mL, se vierte agua destilada a 1/4 de su capacidad. Luego se introduce un objeto macizo e insoluble con forma cúbica de 10 cm de arista y el resto se añade aceite hasta llenar el recipiente. Determine la densidad del aceite si la masa total es de 2950 g.
Considere para el cubo macizo una densidad de 2 g/mL y asuma para el agua 1 g/mL.
3.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
4.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
5.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Se desea concentrar 300 g de una solución azúcar del 15% para convertirla al 25%. Que masa de azúcar debe añadirse para alcanzar el objetivo.
6.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
7.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
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