quiziz FISICA Y QUIMICA

Quiz
•
Physics, Chemistry
•
University
•
Hard
Grupo Minerva
Used 111+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
30 gramos de agua a 30°C se mezclan con 70g de agua a 70°C. Hallar la temperatura de equilibrio.
12°C
89°C
67°C
58°C
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calcular la cantidad de calor necesaria para elevar la temperatura de 200 g de aluminio de 10 °C hasta 40°C. Ce Al= 0,02 cal / g ºC
100 cal
120 cal
140 cal
160 cal
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Se tiene 2 litros de agua a 10°C en un recipiente de capacidad calorífica despreciable. ¿Qué cantidad de agua a 100°C se debe de agregar al recipiente para que la temperatura final de equilibrio sea de 20°C?
0,5 L
0,25 L
0,35 L
0,27 L
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qué cantidad de calor se requiere para convertir 1g de hielo a -10°C en vapor a 100°C.
155 cal
254 cal
455 cal
725 cal
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determinar la normalidad de una solución de H2S que tiene una concentración 3M.
2N
4 N
6 N
8 N
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuántas moles de amoníaco se formarán a partir de 4 moles de nitrógeno con 36g de hidrógeno? P.A. (N = 14)
2
4
8
10
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Balancear la siguiente ecuación e indicar la suma de coeficientes de los productos:
1
3
4
8
8.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
¿Cuántos gramos de calcio existen en el Ca(NO3)2; si se tiene una muestra de esta sal que contiene 20 g. de nitrógeno? m.A.: (Ca=40; N=14; O=16).
68,2 g
32,6 g
28,6 g
12,8 g
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