untitled
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Medium
CRISTIANE RIBEIRO
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
O que é mol?
é a quantidade de massa.
é a quantidade de matéria.
é a quantidade de densidade.
é a quantidade de volume.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é 6,02x1023 átomos?
é o número de lavoisier.
é o número de avogadro.
é o número de volume.
é o número de massa.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Qual é a massa molar de HCl ? ( Considere H = 1,0 e Cl = 35,5)
38,0 g/mol
35,0 g/mol
35,5 g/mol
36,5 g/mol
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Qual é a massa molar do H2O? ( Considere H = 1,0 e o O = 16,0)
18,0 g/mol
33,0 g/mol
20,0 g/mol
36,0 g/mol
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Qual é a massa de 2 mol de H2O? ( MM= 18,0 g/mol)
18,0 g/mol
24,0 g/mol
36,0 g/mol
48,0 g/mol
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é a massa de 3 mol de glicose? ( MM = 180 g/mol)
180,0 g/mol
240,0 g/mol
360,0 g/mol
540 g/mol
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quantos n° de moléculas em 4 mol de moléculas de água? ( Considere que 1 mol tem 6,0 x 1023 moléculas)
6,0 x 1023 moléculas.
18,0 x 1023 moléculas
2,4 x 1024 moléculas
24,0 x 1023 moléculas
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