
LEIS PONDERAIS
Authored by LUCIANA SILVA
Chemistry
10th - 11th Grade
Used 27+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A frase “ Na natureza nada se cria nada se perde tudo se
transforma “ se refere a lei de:
Dalton
Proust
Lavoisier
Rutherford
Thomson
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 4g de gás hidrogênio reage com 32g de gás oxigênio a massa de água formada será:
32g
4g
8g
40g
36g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para uma reação química qualquer a massa de cada substância dessa reação obedece uma relação constante. Este enunciado se refere a lei :
Da conservação da massa
Das proporções constantes
De Lavoisier
De Einstein
Dos volumes
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
56g de óxido de cálcio reage com 18g de água produzindo 74g de hidróxido de cálcio. A massa de água que irá reagir com 28g de óxido de cálcio será
18g
0g
28g
9g
37g
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se uma substância é representada pela fórmula ABC , e se 100g dessa substância é formada por 20g de A, 70g de B e 10g de C. Qual será a porcentagem em massa do componente A na substância ABC ?
10%
20%
30%
40%
70%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Após ocorrer uma reação química em um recipiente fechado, a quantidade de matéria:
aumenta
diminui
permanece constante
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