verano sel 3 tema 6 repaso
Quiz
•
Chemistry
•
3rd Grade
•
Practice Problem
•
Hard
jorge barrera
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
1 Que volumen ocupa 68 g de amoniaco, NH3, que se encuentra a 227ºC y ejerce una presión de 1560 mmHg
Masas atómicas: N=14; H=1
40 L
60 L
80 L
90 L
2.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
6
8
12
13
3.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
Una muestra de 2 kg posee 40% en masa de calcio que reacciona con suficiente bromo líquido, indique la masa de bromuro de calcio que se produce.
Ca + Br2 CaBr2
Masas atómicas: Ca=40; Br=80
2 kg
400 g
4 kg
40 kg
4.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
Hallar el peso atómico del elemento M, si el peso equivalente del óxido XO3 es 74/3
Masa atómica: O=16
50
75
90
100
5.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
Hallar la cantidad de bromuro de calcio, CaBr2, necesario para preparar una solución de 500 mililitros 0,4 N
Masas atómicas: Ca=40; Br=80
Calcio: ubicado grupo IIA
10 g
20 g
200 g
100 g
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