trilha 2 ano
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
francisco viana
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Qual é a definição correta de massa molar?
A massa total de uma substância em gramas.
A massa de um mol de átomos de um elemento.
A massa de um mol de moléculas de uma substância.
A massa total de átomos presentes em uma molécula.
2.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Qual é a unidade de medida mais comumente usada para expressar a massa molar de uma substância?
Grama (g)
Grama por mol (g/mol)
Quilograma (kg)
Quilograma por mol (kg/mol)
3.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Qual é a massa molar do oxigênio (O2)?
8 g/mol
16 g/mol
32 g/mol
64 g/mol
4.
MULTIPLE CHOICE QUESTION
2 mins • 20 pts
Qual a massa molar do etanol C2H6O C- 12g H- 1g O-16g
56 g/mol
46 g/mol
5 g/mol
30 g/mol
5.
MULTIPLE CHOICE QUESTION
45 sec • 20 pts
Qual é o nome do elemento químico representado pelo símbolo "Fe" na tabela periódica?
Ferro
Flúor
Fósforo
Francium
6.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
A tabela periódica tem quantos periodos e quantas familias
7 familias e 18 periodos
8 periodos e 7 familias
17 familias e 8 periodos
7 periodos e18 familias
7.
MULTIPLE CHOICE QUESTION
45 sec • 20 pts
Qual é o elemento químico representado pelo símbolo "Na" na tabela periódica?
Sódio
Níquel
Alumínio
Potássio
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