
Avaliação 2º3 - 2ºT
Authored by Adriana Seidel
Chemistry
11th Grade
Used 2+ times

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6 questions
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1.
FILL IN THE BLANK QUESTION
10 mins • 2 pts
1) (2,0) Uma pessoa precisa consumir 3570 Kcal por dia, quantos gramas de glicose ela precisa consumir por dia para atingir esse valor?
Considere: 1kcal = 4,0KJ
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + 2800KJ/mol
OBS: Na caixa da resposta digite apenas números.
Utilize a tabela periódica.
Answer explanation
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
2) (1,0) Calcule a eficiência do combustível em KJ/g.
OBS: Utilize a tabela periódica e escreva os cálculos na folha resposta
Etanol (C₂H₆O) ΔH= -1380 KJ/mol
20KJ/g
30KJ/g
40KJ/g
50KJ/g
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
3) (1,0) Calcule a eficiência do combustível em KJ/g.
OBS: Utilize a tabela periódica.
Gasolina (C₈H₁₈) ΔH= -5472 KJ/mol
48KJ/g
50KJ/g
52KJ/g
54KJ/g
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
4) (1,0) Calcule a eficiência do combustível em KJ/g.
OBS: Utilize a tabela periódica.
Gás Hidrogênio (H₂) ΔH= -290 KJ/mol
139KJ/g
141KJ/g
143KJ/g
145KJ/g
5.
OPEN ENDED QUESTION
5 mins • 1 pt
5) (1,0) O gás Hidrogênio é o combustível mais eficiente em KJ/g, porém não é o mais utilizado. Por que? Justifique sua resposta.
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6.
DRAW QUESTION
10 mins • 2 pts
6) (2,0) Em sala de aula aprendemos que o etanol é o combustível menos poluente, pois ocorre um ciclo de fenômenos que indicam isso.
Desenhe esse ciclo.

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