Chemistry Solutions Quiz
Quiz
•
Science
•
9th - 12th Grade
•
Hard
Michael Wu
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes NÃO é uma unidade de medida de concentração mencionada no texto?
Molaridade
Partes por milhão
Densidade
Porcentagem em volume
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 0,75 mol de NaCl são dissolvidos em 2,5 L de solução, qual é a molaridade da solução?
0,15 M
0,30 M
0,45 M
0,60 M
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quantos mols de NaCl são necessários para preparar 3,00 L de uma solução 1,5 M?
4,5 mols
3,0 mols
1,5 mols
6,0 mols
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que significa "ppm" em química?
Partes por milhão
Partes por mol
Partes por massa
Partes por minuto
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como se define partes por milhão (ppm)?
Gramas de soluto por 1 milhão de gramas de solução
Gramas de soluto por 1 mil gramas de solução
Gramas de soluto por 1 cem gramas de solução
Gramas de soluto por 1 bilhão de gramas de solução
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes NÃO é uma unidade de concentração mencionada no documento?
Molalidade
% Massa
% Volume
% Densidade
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a fórmula para calcular partes por milhão (ppm)?
ppm = (gramas de soluto / gramas de solução) x 1000000
ppm = (gramas de solução / gramas de soluto) x 1000000
ppm = (gramas de soluto / gramas de solução) x 1000
ppm = (gramas de solução / gramas de soluto) x 1000
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