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Q2206533 Química
Nos motores de controle de altitude do ônibus espacial, a metilhidrazina, usada como combustível, reage com o tetróxido de dinitrogênio. A reação é representada pela equação a seguir.    4 CH6N2 () + 5 N2O4( 4 CO2(g) + 12 H2O () + 9 N2(g) As duas substâncias reagem instantaneamente quando estão em contato. A energia liberada por 1,00 g de CH6N2 à temperatura constante é de 7kJ.
Dados: Massas molares (g.mol-1 ): H=1; C =12; N=14.
A variação de entalpia da reação apresentada, em kJ, é 
Alternativas
Q2206532 Química
No Brasil, a poluição atmosférica proveniente da queima de árvores emite 2 bilhões de toneladas de gás carbônico por ano. Dados: massas molares (g.mol-1): C=12; O=16. Considere a constante de Avogadro igual a 6 x 1023.
O número de moléculas desse gás lançadas por ano na atmosfera é de, aproximadamente,
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Q2206531 Química
Numerosos metais passaram a ter importância industrial a partir da segunda metade do século XX. Hoje, o gadolínio é utilizado nos aparelhos de ressonância magnética nuclear, o neodímio é usado em laser, o escândio é utilizado junto com o alumínio e o tungstênio em armações de bicicletas, o tântalo e o nióbio são utilizados em telefones celulares.
Sobre a posição dos elementos sublinhados na classificação periódica, assinale a opção correta.
Alternativas
Q2206530 Química
O cobre-64 é usado, na forma de acetato de cobre(II), no tratamento de tumores cerebrais.
Considerando que a meia-vida desse radioisótopo é de 13,0 horas, a quantidade que sofreu desintegração, após 2 dias e 4 horas, de uma amostra com 12,00mg de acetato de cobre(II) será, aproximadamente, de
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Q2206529 Química
No ensino de eletroquímica, a pilha de Daniell é um importante exemplo a ser trabalhado com os alunos.
Dados: E0(Zn2+/ Zn) = – 0,76V E0(Cu2+/ Cu) = + 0,34V
Nessa pilha, formada por zinco e cobre, temos
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Q2206528 Química

Leia o texto:

“Embora o álcool possa ajudar a adormecer mais rapidamente, já que tem um efeito sedativo, a verdade é a logo prazo a bebida gera um sono de má qualidade, superficial e fragmentado. Isso porque, a bebida alcóolica age sobre o ácido gama-amino butírico, um neurotransmissor que inibe os impulsos entre as células nervosas e promove a calma...”

O Globo, 23.3.2023, p. 19.

A fórmula do neurotransmissor citado no texto é 

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Q2206527 Química
No interior dos motores de combustão interna ocorrem combustões incompletas, com emissão de hidrocarbonetos que não reagem e de subprodutos intermediários como monóxido de carbono e óxidos de nitrogênio. A utilização de catalisadores automotivos é uma ferramenta que permite a diminuição da emissão de tais poluentes, garantindo a preservação da qualidade do ar nos centros urbanos. 
Os catalisadores promovem reações
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Q2206526 Química

Leia o texto:

O “sal marinho”, por não passar pelo processo químico do sal comum, tem uma quantidade menor de aditivos químicos como conservantes e corantes associados ao desenvolvimento de câncer. Ele mantém maior quantidade de minerais como cálcio, potássio, ferro, zinco e iodo.

O Globo, 16.3.2023, p.23.

Assinale a opção em que todos os elementos citados formam naturalmente cátions bivalentes.

Alternativas
Q2206525 Química
No estudo dos gases que contribuem para os problemas da poluição atmosférica, um fator a ser considerado é o Potencial de Aquecimento Global (PAG) de cada composto. Tal fator indica qual é o potencial de cada molécula em contribuir para o efeito estufa.
O quadro a seguir mostra as principais fontes antrópicas responsáveis pela liberação de gases estufa na atmosfera, o PAG correspondente e a estimativa de contribuição desse gás.
Imagem associada para resolução da questão
Fonte: ROCHA,J.C. et al. Introdução à Química Ambiental 2ª edição. Porto Alegre: Boookman, 2009. Pg 121
Assinale a opção que apresenta o gás relacionado ao PAG igual a 24.
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Q2206474 Inglês
Text VIII 


From: https://slideplayer.com/slide/7593575/
In “strict adherence”, the adjective that is similar to “strict” is
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Q2206473 Inglês
Text VIII 


From: https://slideplayer.com/slide/7593575/
In “a fixed curriculum”, the word “a” is a(n)
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Q2206472 Inglês
Text VIII 


From: https://slideplayer.com/slide/7593575/
Read the following skills:
1. Emphasizing social interaction. 2. Asking students to memorize. 3. Building on previous knowledge. 4. Providing repetition exercises. 5. Copying facial expressions. 6. Interacting with students.
The skills which are typical of a constructivist class are, respectively,
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Q2206471 Inglês
Text VIII 


From: https://slideplayer.com/slide/7593575/
Based on the information provided by Text, mark the statements below as true (T) or false (F).
( ) Traditional classes always use authentic materials. ( ) In constructivist classrooms, students work exclusively by themselves. ( ) Students’ experiences are taken into consideration in a constructivist environment.
The statements are, respectively,
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Q2206470 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/

To be in line with the BNCC, if teaching Dear Baobab to elementary school children, teachers should

Alternativas
Q2206469 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
The boy in Dear Baobab travelled with his
Alternativas
Q2206468 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
In Dear Baobab, the tree
Alternativas
Q2206467 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
The excerpt that expresses the reviewer’s opinion about Dear Baobab is:
Alternativas
Q2206466 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
In Here I am, the boy finds the city too
Alternativas
Q2206465 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
In the first story, the boy
Alternativas
Q2206464 Inglês
Text VII 


Here are two multicultural picture books about immigration thathave been suggested for elementary school children:
Here I Am
by Patti Kim

     Newly arrived in America from an Asian country, a young boy is overwhelmed by the lights and noise of a busy city. He finds comfort in a red seed he brought from his faraway home country. When he loses the seed, the search for it eventually leads him to new friendship. Without words and in expressive cartoon style, Here I am describes the confusion and sadness of an uprooted child.

Dear Baobab
by Cheryl Foggo

Moving from Tanzania to Canada with his aunt and uncle, little Maiko feels homesick. He remembers the big baobab tree in his home village, and feels a connection to a small spruce tree in his new home. Seven years old just like Maiko, the tree sings to him and shares his secrets. When there is talk of cutting down the tree because it is too close to the house, Maiko tries to save it. After all he knows what it feels like to be planted in the wrong place. Dear Baobab is one of my favourite multicultural picture books about immigration, because of its easy-to-relate-to allegory of an uprooted tree.

From: https://coloursofus.com/multicultural-picture-books-immigration/
In both stories, the characters feel
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Respostas
621: E
622: B
623: A
624: E
625: C
626: B
627: A
628: D
629: A
630: B
631: C
632: B
633: A
634: E
635: A
636: E
637: E
638: B
639: C
640: E