
3ºA Mario Tav
Authored by Luiz Devai
Chemistry
12th Grade
Used 2+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Em uma reação em ambiente fechado e condições adequadas foram utilizados 210 g de carbono para reagir com oxigênio suficiente para formar com máximo rendimento 770 g de gás carbônico. Neste contexto a massa de gás oxigênio utilizada foi de:
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Nas transformações químicas, as novas substâncias formadas são designadas por:
Reagentes
Produtos da reação
Agentes da reação
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Se 4g de gás hidrogênio reage com 32g de gás oxigênio a massa de água formada será:
32g
4g
8g
40g
36g
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Após ocorrer uma reação química em um recipiente fechado, a quantidade de matéria:
aumenta
diminui
permanece constante
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual será a quantidade de peróxido formado?
23
32
69
78
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual unidades utilizamos para identificar quantidade de matéria nas reações químicas?
mol
Litros
Grama
Kelvin
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quantos átomos existe em um mol de substâncias?
2. 6.022 x 10^24
1. 6.022 x 10^22
6.022 x 10^23
3. 6.022 x 10^25
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