
TESTE DE QUÍMICA
Authored by FELIPE SOUZA
Chemistry
2nd Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual a unidade da grandeza quantidade de matéria (n)?
Massa molar.
Mol.
Metro.
Massa.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
O_____ contém exatamente 6,0 . 1023 entidades elementares.
Quilograma.
Volume.
Mol.
3.
MULTIPLE CHOICE QUESTION
10 mins • 2 pts
Qual a massa molar do H2SO4?
Dados: H = 1 g/mol; S = 32 g/mol; O = 16 g/mol
49 g/mol.
98 g/mol.
51 g/mol.
98 g.
4.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Qual o número de moléculas presente em 16 g de gás oxigênio (O2)?
Dados: MO2 = 32 g/mol; 6,0 . 1023 entidades/mol.
3,0 . 1023 moléculas.
9,0 . 1023 moléculas.
6,0 . 1023 moléculas.
N.D.A.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Qual a massa molar do SO3?
Dados: S = 32 g/mol; O = 16 g/mol.
48 g/mol.
64 g/mol.
72 g/mol.
16 g/mol.
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
1 mol de moléculas de H2O possui quantos átomos de hidrogênio?
2 átomos.
6,0 . 1023 átomos.
12 . 1023 átomos.
N.D.A.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Substância que aumenta a velocidade da reação e é regenerada ao final do processo.
Catalisador.
Oxidante.
Inerte.
N.D.A.
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