Foram encontradas 1.060 questões.
Em um recipiente fechado, um professor de Química do IFPI, Campus Teresina-Central, realizou a seguinte reação química no âmbito da disciplina de Química Geral Experimental:
CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)
Nessa reação, a massa de H2O(l) corresponde a 50% da massa total dos reagentes. Além disso, sabe-se que, para cada 40 g de CaCl2(aq) formados, produzem-se simultaneamente 80 g de CO2(g). Diante disso, com base na Lei da Conservação das Massas, proposta por Lavoisier, e no conceito de proporções constantes estabelecido pela Lei de Proust, qual é a massa de reagentes necessária para a formação de 40 g de CO2(g)?
Provas
Text for question 57
When international companies and organizations developed, English was often chosen as a working language of European Central Bank, although the bank is in Germany. In Asia and the Pacific, nine out of ten international organizations work only in English.
English is important not because it has more firstlanguage speakers than other languages (Chinese has more) but because it is used extremely widely. Will this situation continue?
VINEY, Brigit. Oxford Bookworms Factfiles: The History of the English Language: Level 4: 1400-Word Vocabulary. Oxford: Oxford University Press, 2008. https://www.newyorker.com/magazine/2025/07/07/theargentinean-comic-strip-that-galvanized-a-generation. Acesso em 04 fev.2026.
Read the excerpt and choose which option uses the same passive voice grammar pattern as the highlighted sentence:
Provas
Text for question 56
At around 6:30 p.m., I decide I’m not going to sleep at the hospital tonight. I need to shower and eat real food. I call my best friend, Yara, and tell her I’m on my way to her house. Everything in Gaza is within walking distance, but I’m absolutely exhausted. I realize with dread that, if I’m not mistaken, I’ve left my wallet in mama’s bag, and I don’t have any money at all. So I do something embarrassing, and ask a taxi driver if he can drive me to Yara’s for free. He agrees on one condition: ‘When I get killed’, he says, ‘post a nice picture of me online, and ask people to pray for me.’
Everyone in Gaza knows that they’ll eventually die, and that it’s only a matter of time. I smile at the taxi driver and assent.
ALAQAD, Plestia. The Eyes of Gaza: A Diary of Resilience. New York: Little, Brown and Company, 2025.
Read the excerpt by the young journalist Plestia Alaqad, “The Eyes of Gaza”, and choose the statement that most adequately points out the discourse effect of the verb tense used:
Provas
According to Marcuschi (2008), texts can be understood through the complementary notions of genre and textual typology. Genres are socially situated and historically constructed forms of language use that circulate in everyday communication. Textual types, in contrast, are abstract theoretical categories defined by linguistic and structural criteria. In real communicative situations, texts usually combine different textual types within a single genre. The definition of textual types is essential to the comprehension of genres, as both concepts are mutually constitutive.
Read the excerpt from News of a Kidnapping by García Márquez (1997), a Colombian Nobel Prize– winning novelist and journalist whose significant work includes this book, and identify the relationship established between genre and text types.
After waiting three hours, a man in a mask came in, welcomed them on behalf of high command, and announced that Father Pérez was expecting them but for reason of security the women should go first. This was the first time that Diana showed signs of uneasiness. Hero Buss took her aside and said that under no circumstances should she agree to break up their group. Because she could not prevent that from happening, Diana slipped him her identity card. She did not have time to explain why, but he understood it to be a piece of evidence in the event she disappeared.
GARCÍA MÁRQUEZ, Gabriel; GROSSMAN, Edith (trad.). News ofaKidnapping.1.Americaned.NewYork:AlfredA.Knopf,1997
Provas
If we consider the main theoretical perspectives that have influenced and shaped Second Language Acquisition (SLA) studies – Environmentalism (Skinner), Nativism (Chomsky), Interactionist approaches, and Complexity Theory (Larsen-Freeman) – which statement best reflects a more contemporary understanding of SLA and its agents?
Provas
Text for question 53
“I always tried to be decent to the warders in my section; hostility was self-defeating. There was no point in having a permanent enemy among warders.
It was ANC policy to try to educate all people, even our enemies: we believed that all men, even prison service warders, were capable of change, and we did our utmost to try to sway them.
In general we treated the wanders as they treated us. If a man was considered, we were considerate in return. Not all of our warders were ogres. We noticed right from the start that there were some among them who believed in fairness.”
MANDELA, Nelson. Long Walk to Freedom. Boston; New York: Little, Brown and Company, 1994.
Bakhtin (1986) understands language as a social and dialogic process in which meaning is constructed through interaction. Within this view, each speech genre is characterized by relatively stable linguistic, compositional, and stylistic structures that emerge from specific social contexts and communicative purposes. Considering the perspective of teaching language contextualized by genres and the structure presented in the excerpt, which proposal is more adequate to an English class:
Provas
Text for questions 50 and 51
I believe that on the first night I went to Gatsby’s house I was one of the few guests who had actually been invited. People were not invited – they went there. They got into automobiles which bore them out to Long Island, and somehow they ended up at Gatsby’s door. Once there they were introduced by somebody who knew Gatsby, and after that they conducted themselves according to the rules of behavior associated with amusement parks. Sometimes they came and went without having met Gatsby at all, came for the party with a simplicity of heart that was its own ticket of admission.
I had been actually invited. A chauffeur in a uniform of robin’s-egg blue crossed my lawn early that Saturday morning with a surprisingly formal note from his employer: the honor would be entirely Gatsby’s, it said, if I would attend his “little party” that night. He had seen me several times, and had intended to call on me long before, but a peculiar combination of circumstances had prevented it – signed Jay Gatsby, in a majestic hand.
Dressed up in white flannels I went over to his lawn a little after seven, and wandered around rather ill at ease among swirls and eddies of people I didn’t know – though here and there was a face I had noticed on the commuting train. I was immediately struck by the number of young Englishmen dotted about; all well dressed, all looking a little hungry, and all talking in low, earnest voices to solid and prosperous Americans. I was sure that they were selling something: bonds or insurance or automobiles. They were at least agonizingly aware of the easy money in the vicinity and convinced that it was theirs for a few words in the right key.
FITZGERALD, F. S. The Great Gatsby. Charles Scribner's Sons, 1925. p. 41-42
Considering the literary context of the excerpt and the details that characterize Gatsby’s party, which alternative most accurately explains the meaning of the collocation dotted about and the phrasal verbs wander around, bear out, and call on?
Provas
Text for questions 50 and 51
I believe that on the first night I went to Gatsby’s house I was one of the few guests who had actually been invited. People were not invited – they went there. They got into automobiles which bore them out to Long Island, and somehow they ended up at Gatsby’s door. Once there they were introduced by somebody who knew Gatsby, and after that they conducted themselves according to the rules of behavior associated with amusement parks. Sometimes they came and went without having met Gatsby at all, came for the party with a simplicity of heart that was its own ticket of admission.
I had been actually invited. A chauffeur in a uniform of robin’s-egg blue crossed my lawn early that Saturday morning with a surprisingly formal note from his employer: the honor would be entirely Gatsby’s, it said, if I would attend his “little party” that night. He had seen me several times, and had intended to call on me long before, but a peculiar combination of circumstances had prevented it – signed Jay Gatsby, in a majestic hand.
Dressed up in white flannels I went over to his lawn a little after seven, and wandered around rather ill at ease among swirls and eddies of people I didn’t know – though here and there was a face I had noticed on the commuting train. I was immediately struck by the number of young Englishmen dotted about; all well dressed, all looking a little hungry, and all talking in low, earnest voices to solid and prosperous Americans. I was sure that they were selling something: bonds or insurance or automobiles. They were at least agonizingly aware of the easy money in the vicinity and convinced that it was theirs for a few words in the right key.
FITZGERALD, F. S. The Great Gatsby. Charles Scribner's Sons, 1925. p. 41-42
The passage employs a range of narrative tenses to organize temporal connections and narrative perspective. When these tense choices and their contribution to the narrator’s construction of events are considered, it is NOT accurate to assert that
Provas
According to the following text, which statement best describes the role of the teacher in the learning process?
(…) even when teachers appear to be in control of interaction, they are subject to the dynamics of the complex system of the classroom. Teachers do not control their students' learning. Teaching does not cause learning; learners make their own paths (…). This does not mean that teaching does not influence learning, far from it; teaching and teacher-learner interaction construct and constrain the learning affordances of the classroom. What a teacher can do is manage and serve her or his students' learning in a way that is consonant with their learning processes. Thus, any approach we might advocate would not be curriculum-centered nor learner-centered, but it would be learningcentered – where the learning guides the teaching and not vice versa.
Due to the non-linearity of a complex dynamic system as it moves through state space, small perturbations (teacher interventions) can make a big difference. Of course, it also can happen the other way around. Teachers and students may work very hard on some aspect of language using, with little apparent success. One day, though, the point of criticality may be reached and the system self-organizes in a new way.
LARSEN-FREEMAN, Diane; CAMERON, Lynne. Complex systems and applied linguistics. Oxford: Oxford University Press, 2008. p. 199-200
Provas
Which statement is NOT accurate regarding the use of infinitives in the following headlines?
Headline 1:
Exclusive: US to issue generallifting some sanctions on Venezuelan oil industry
It's a shift from a previous plan to grant individual exemptions to sanctions for companies seeking to do business in the country.
Headline 2:
http://www.theguardian.com/international
Provas
Caderno Container