
Revisão Geral Química
Quiz
•
Chemistry
•
5th - 12th Grade
•
Medium
Prof. Aprimoramentos
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Com base no potencial de redução, se o elemento X tem e°=0,87 e o elemento y tem e°=-1,23, qual deles se oxidará?
x
y
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Com base no potencial de redução, se o elemento X tem e°=0,87 e o elemento y tem e°=-1,23, qual deles será o polo positivo?
x
y
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Com base no potencial de redução, se o elemento X tem e°=0,87 e o elemento y tem e°=-1,23, qual será a diferença de potencial nessa pilha?
1,23V
0,87V
-2,10V
2,10V
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qual o valor do NOX do fósforo do H4P2O7 (sabendo que H= +1 e O = -2)?
+5
-5
+10
-10
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sabendo que na CNTP o volume molar de um gás é 22,4L. Quantos mols teriamos em 5,6L de um gás qualquer?
1 Mol
0,5 Mol
0,25 Mol
4 Mol
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sabendo que o íon Al+3 precisa de 3 elétrons para ficar com carga 0. Quantos elétrons será necessário para regularizar a carga de 4.1023 íons do Al?
4.1023
12.1023
1,2.1024
1,2.1022
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Um cientista chamado Albert precisava de 9 mols de lumus africanus, cuja massa molar é de 69 g/mol, quantos gramas ele precisará dessa substância?
730g
621g
6,21g
6210g
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