Chemistry

Recently Asked Questions In Chemistry

Question
Question 20 of 20 :
Select the best answer for the question.
Exosphere
Thermopause
Space shullle
Thermosphere
Auroras
Polar mesospheric clouds
(Noctiucent clouds)
Meteors
Mesopause
Mesosphere
Stratopause
Stratosphere
Troposphere
2. Tropopause
Polar stratosphere cloud
(Nacreous cloud)
« Commercial airliner
(image by The High Fin Sperm Whale (CC BY 3.0 (https//creativecommons.org/licenses/by/3.O/deed.en)
via Wikimedia Commons)
20. Look at the figure above. Which layer of the atmosphere holds the ozone layer?
O A. Mesosphere
O B. Stratosphere
O C. Thermosphere
O. D. Troposphere
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Answer

B. Stratosphere

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The ozone layer is located in the stratosphere, which is the second layer of the atmosphere...
Question
What effect did the Puebloan Revolt have on Spanish colonization in the
Southwest?
• A. It created greater friction and more violence between the Spanish
colonists and Puebloan peoples.
• B. It promoted the Spanish colonists to agree to the Puebloan
peoples' demands and to coexist peacefully with them.
• c. It caused the Spanish colonists to flee the colony and for the
Puebloan peoples to resume control.
D. It led to the massacre of hundreds of Puebloan peoples and the
destruction of their settlements.
Answer

C. It caused the Spanish colonists to flee the colony and for the Puebloan peoples to resume control.

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The Puebloan Revolt of 1680 was a major uprising of the Puebloan peoples against Spanish colonization in the Southwest. The revolt was...
Question
what types of cancer is surgery used for?
Answer

Surgery is used for many types of cancer, including breast cancer, lung cancer, colon cancer, prostate cancer, and skin cancer, among others.

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Surgery is a common treatment option for many types of cancer. It is often used to remove cancerous tumors or growths from the body...
Question
environment
At fertilization, what happens to the sex cells?
Answer

The sex cells fuse together to form a single cell, the zygote.

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At fertilization, the male and female sex cells (sperm and egg) come together and fuse to form a single cell, the zygote...
Question
Quale tra i seguenti oggetti non è uno strumento di misura?
*
Il termometro
La bilancia
L’ orologio
La calamita
Answer

La calamita

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Uno strumento di misura è un dispositivo progettato per misurare una proprietà fisica,...
Question
Open market operations take place when the
central bank buys or sells stocks
central bank buys or sells government bonds
(c central bank increases or decreases the discount rate to monitor the money supply
central bank increases or decreases reserve requirements for depository institutions
commercial banks borrow reserves from the central bank
Answer

central bank buys or sells government bonds.

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Open market operations refer to the buying and selling of government securities by the central bank in the open market. When the central bank buys government securities,...
Question
4. Write a chemical equation for the sublimation of water.
Answer

H2O (s) --> H2O (g)

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Sublimation is the process of a solid changing directly into a gas without first becoming a liquid. The chemical equation for the sublimation of...
Question
Testo argomentativo sul razzismo
Answer

Il razzismo è una delle piaghe più gravi della società contemporanea. Si tratta di un fenomeno che si manifesta in molte forme, dal pregiudizio e la discriminazione fino alla violenza e all'odio. Il razzismo è basato sull'idea che alcune persone sono superiori ad altre a causa della loro razza, etnia o nazionalità. Questa idea è completamente falsa e non ha alcun fondamento scientifico o morale. Il razzismo ha conseguenze devastanti per le persone che ne sono vittime. Può portare alla perdita di opportunità di lavoro, all'isolamento sociale, alla violenza e persino alla morte. Inoltre, il razzismo danneggia anche la società nel suo insieme, poiché impedisce la costruzione di una comunità inclusiva e rispettosa delle differenze. Per combattere il razzismo, è necessario agire a livello individuale e collettivo. A livello individuale, dobbiamo impegnarci a superare i nostri pregiudizi e ad accettare le persone per quello che sono, senza giudicare sulla base della loro razza o etnia. A livello collettivo, dobbiamo promuovere politiche e iniziative che favoriscano l'inclusione e il rispetto delle differenze. In conclusione, il razzismo è un fenomeno che non ha posto nella nostra società. Dobbiamo impegnarci a combatterlo in ogni sua forma, per costruire una comunità inclusiva e rispettosa delle differenze.

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Racism is a complex and multifaceted issue that has been present in human societies for centuries. It is based on the false belief that...
Question
Which option is considered to be at the lowest level of abstraction?
• A. Binary code
• B. Calculations
• C. User interface
• D. Accessing memory
Answer

A. Binary code.

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Binary code is considered to be at the lowest level of abstraction because it is the most basic representation of data in a computer system. It consists of...
Question
Question 3 (3 points)
When you babysit, your role is a(n)
• a b
O c
O d
friend
playmate
employee
neighbor
Answer

Friend

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When you babysit, your role is a friend. This means that you are there to provide companionship and support to the child or children you are...
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