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10th Grade

9 Qs

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Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Medium

Created by

CRISTIANE RIBEIRO

Used 1+ times

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9 questions

Show all answers

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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