
4° BIM- EM1
Authored by Amanda Rangel
Chemistry
10th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A massa molar da Glicose (C6H12O6) é:
Dados: M(C) = 12 g/mol; M(H) = 1 g/mol e M(O) = 16 g/mol
180 g/mol
29 g/mol
90 g/mol
30 g/mol
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Em 90 g de água (H2O) existem:
Dados: M(H) = 1 g/mol e M(O) = 16 g/mol
1 mol
3 mol
6.1023 moléculas
30.1023 moléculas
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Em 8,5 g de amônia (NH3) existem:
Dados: M(N) = 14 g/mol e M(H) = 1 g/mol
1 mol
0,5 mol
6.1023 moléculas
12.1023 moléculas
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
22 g de CO2
44 g de CO2
88 g de CO2
176 g de CO2
220 g de CO2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
18.1023 moléculas
12.1023 moléculas
6.1023 moléculas
3.1023 moléculas
1,5.1023 moléculas
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O Fosgênio, COCl2, é um gás venenoso. Quando inalado, reage com a água nos pulmões para produzir ácido clorídrico (HCl), que causa graves danos pulmonares, levando, finalmente, à morte. A equação química dessa reação é:
COCl2 + H2O → CO2 + 2 HCl
Se uma pessoa inalar 198 mg de fosgênio, a massa de ácido clorídrico que se forma nos pulmões, é igual a:
Dados: M(C) = 12 g/mol; M(O) = 16 g/mol; M(Cl) = 35,5 g/mol e M(H) = 1 g/mol
109 mg
146 mg
292 mg
36,5 mg
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A floculação é uma das fases do tratamento de águas de abastecimento público. A reação corresponde:
CaO + H2O → Ca(OH)2
Cada 28 g de CaO reage completamente com:
Dados: M(Ca) = 40 g/mol; M(O) = 16 g/mol e M(H) = 1g/mol
4,5 g de H2O
9 g de H2O
18 g de H2O
27 g de H2O
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