Questões de Vestibular CEDERJ 2021 para Vestibular - 2021.2
Foram encontradas 45 questões
Q1795889
Química
O segundo postulado da teoria atômica de Dalton
estabelecia que “átomos de um mesmo elemento químico são idênticos e iguais em peso”. Por mais de um
século essa concepção foi hegemônica, o que levou a
um problema, aparentemente sem solução, relacionado
à determinação das massas atômicas dos elementos
químicos, cujos valores variavam de um experimento
para outro. O surgimento da espectrometria de massas,
no início do Século XX, solucionou o problema com a
grande contribuição de Francis W. Aston, que recebeu o
Prêmio Nobel de Química em 1922. A técnica analítica
consiste em separar íons no estado gasoso, por meio
da relação massa/carga de átomos e moléculas. Tal ferramenta permitiu a determinação precisa das massas
atômicas dos elementos.
O desenvolvimento da espectrometria de massas levou à confirmação da existência dos
O desenvolvimento da espectrometria de massas levou à confirmação da existência dos
Q1795890
Química
O luminol (5-amino-2,3-di-hidro-1,4-ftalazinadiona)
é muito utilizado em perícias criminais a fim de identificar a presença de sangue em locais de crimes contra
pessoas, mesmo que o local tenha sido lavado, sendo
uma ferramenta muito útil no auxílio ao trabalho pericial.
A ação do luminol ocorre por meio de uma reação de
quimiluminescência na presença de peróxido de hidrogênio em meio básico, catalisada pelo íon ferro presente na hemoglobina, emitindo luz de cor azul e revelando
as manchas de sangue. A reação, de forma simplificada,
é representada a seguir.
Em relação a esta reação, pode-se afirmar corretamente que
Em relação a esta reação, pode-se afirmar corretamente que
Q1795891
Inglês
Texto associado
NAMATALE, Uganda — Dr. Eva Kabwongera’s job
is to make sure life-saving Covid-19 vaccines reach
Uganda’s 45 million people. On a recent morning, that
journey took her to a tiny island that is home to less than
2,000 people.
The 40 doses Kabwongera brought with her to Namatale had traveled more than 3,000 miles via plane, truck,
ferry and boat from Pune, India, to get to the outcrop in
Africa’s vast Lake Victoria.
“We are delivering hope,” said Kabwongera, who is
UNICEF’s immunization chief for Uganda, as she stepped into shallow water and walked to shore soaking
wet. Dozens of small, smiling children greeted her.
“The people there are waiting for it,” she added.
Dr. Eva Kabwongera says the country is struggling to finance deliveries to remote locations, such as Namatale.
But hope does not defeat a pandemic — vaccines do.
And Uganda doesn’t have enough to vaccinate even a
tiny portion of its population. With the severe international shortage, Uganda and countries like it look set to
have to wait to inoculate even its front-line health workers
and most vulnerable groups to help stop Covid-19 and
prevent the development of dangerous vaccine-resistant
variants.
The result has been an extreme gap in vaccine distribution, with almost 1 in 4 people receiving a vaccine in
high-income countries and a staggering 1 in more than
500 in low-income ones, according to the World Health
Organization. Uganda, for example, has so far received
only 864,000 vaccine doses — enough to fully vaccinate
400,000 people with two doses, or less than 1 percent of
the country’s 45 million population.
It wasn’t supposed to be like this.
In https://www.nbcnews.com/specials/uganda-covid-vaccine-
struggle/index.html
According to the text, it is incorrect to state that
Q1795892
Inglês
Texto associado
In https://www.thecomicstrips.com/properties/thatslife/art_images/
tl1040427.jpg
If I wanted to discard an old flashdrive, a few margarine tubs, and written post-it, where should I place these items, respectively,
Q1795893
Inglês
Texto associado
Empathy
Empathy is the ability to recognize, understand, and share the thoughts and feelings of another person, animal, or fictional character. Developing empathy is crucial for establishing relationships and behaving compassionately. It involves experiencing another person’s point of view, rather than just one’s own, and enables prosocial or helping behaviors that come from within, rather than being forced.
Some surveys indicate that empathy is on the decline in the United States and elsewhere, findings that motivate parents, schools, and communities to support programs that help people of all ages enhance and maintain their ability to walk in each other’s shoes.
https://www.psychologytoday.com/us/basics/empathy
Empathy can be defined as ...
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