Describe the movement of air when you inhale

Answers

Answer 1
Answer: When you inhale, air passes through the nasal cavity. There, mucus and hairs clean the air from most foreign particles before entering the body. Then, the air passes from the nasal cavity to the pharynx. After the pharynx, it passes through the larynx reaching the trachea. After passing through the trachea, the air reaches the bronchi, and after the bronchi, the bronchioles that branch off the bronchi. From the bronchioles, the air reaches the alveoli that is when gas exchange happens. O2 enters and CO2 leaves.

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What conclusion can be drawn from the statement that an element has a high ionization energy and small atomic size?A) The element is most likely from Group 1A or 2A and in period 1 or 2

B) The element is most likely from Group 2A or 3A and in period 2 or 3.

C) The element is most likely from Group 4A or 5A and in period 4 or 5.

D) The element is most likely from Group 6A or 7A and in period 6 or 7​

Answers

Answer:

The list of answer choices is wrong.

The correct list is:

A) The element is most likely from Group 1A or 2A and in period 1 or 2.

B) The element is most likely from Group 2A or 3A and in period 6 or 7.

C) The element is most likely from Group 4A or 5A and in period 4 or 5.

D) The element is most likely from Group 6A or 7A and in period 2 or 3.

The correct answer is:

  • Option D) The element is most likely from Group 6A or 7A and in period 2 or 3.

Explanation:

The ionization energy increases from left to right on the periodic table. So the elements with higer ionization energies are in the right end of the table. The right most columns are 6A (16) and 7A(17). The column 8A (18) which is that of the noble gases is not normally taken into acccount for this predictions because noble gases are nearly inert.

Hence, the fact that the statement indicates high ionization energy suggests that the element is most likely from group 6A or 7A.

The atomic radius increases from top to bottom, so the smallest elements are in the top rows, which is the periods 1, 2, or 3. The period 1 only has two elements, hydrogen in group 1 and helium in group 8A, so they are not considered in the choices. Thus, that leaves you with the periods 2 or 3.

Adding the two considerations, the conclusion is that the element is most likely from group 6A or 7A and in period 2 or 3.

Answer:

Explanation:

The answer is A) The element is most likely from Group 1A or 2A and in period 1 or 2

Why does some friction occur with seemingly smooth surfaces?

Answers

Even surfaces that seem smooth have irregular bumps that you could see with a microscope, so friction occurs even with smooth-looking objects.

What is the difference between covalent bonds and ionic bonds?a. Covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms.

b. Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between atoms.

c. Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between atoms.

d. Covalent bonds involve the transfer of electrons between atoms; ionic bonds involve the sharing of electrons between atoms.

Answers

Covalent bond = share of electrons between 2 non metal elements example ( co2,cl2)
They share the neucili

Ionic bond = when metal and non metal atrac each other between them there is a force of atraction

Final answer:
The difference between covalent bonds and ionic bonds is b. Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between atoms.

Final answer:

In covalent bonds, atoms share pairs of electrons to achieve a stable electron configuration. This sharing creates a strong bond between the atoms, and they are typically nonmetals. In ionic bonds, there is a transfer of electrons from one atom to another, resulting in the formation of ions with opposite charges.

One atom becomes positively charged (cation), and the other becomes negatively charged (anion). The electrical attraction between these oppositely charged ions holds them together, forming an ionic bond. Ionic bonds typically form between a metal and a nonmetal.

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which contributes to acid rain? A. burning fossil fuels B. nuclear power C. solar power D. hydroelectric power

Answers

The answer is (A) burning fossils fuels releases excess amounts of CO2 ( Carbon dioxide) which reacts with H2O in the atmosphere.
CO2 + H2O -> H2CO3

H2CO3 is known as carbonic acid.
Carbonic acid contributes to problems such as ocean acidification and can dissolve limestone ( CaCO3) sculptures.
Shown by this reaction H2CO3 + CaCO3 -> Ca(HCO3)2 producing Calcium Hydrogen Carbonate.

There are also different causes of acid rain such as Sulfur Dioxide (SO2) and Nitrogen Oxide (NO) which can cause respiratory problems.

What state of matter is carbon at room temperature

Answers

Carbon is a solid at room temperature. 

What really is the Ebola virus?

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The Ebola virus belongs to a family of viruses termed Filoviridae. Filovirus particles form long sometimes branched filaments of varying shapes, as well as shorter filaments , and may measure up to 14,000 nanometers in length with diameter of 80 nanometers.Viral particles contain one molecule of single stranded RNA enveloped in a lipid membrane. New viral particle bud from the surface of their host cell. Although Ebola virus was only discovered in 1976, it is an ancient virus and is thought to have split from other viruses thousands of years ago.

The Ebola virus is a highly infectious and often deadly viral disease that belongs to the Filoviridae family.

It was first identified in 1976 during two simultaneous outbreaks in Sudan and the Democratic Republic of Congo (formerly Zaire). The virus is named after the Ebola River, near the location of the Congolese outbreak.

Ebola is transmitted to humans through direct contact with the blood, bodily fluids, or tissues of infected animals, such as fruit bats, monkeys, or gorillas. It can then spread from person to person through close contact with the blood, secretions, organs, or other bodily fluids of infected individuals.

Ebola causes severe symptoms, including high fever, headache, muscle and joint pain, fatigue, diarrhea, vomiting, and internal and external bleeding. The disease has a high fatality rate, ranging from 25% to 90%, depending on the strain of the virus and the healthcare resources available.

To learn more about the Ebola virus

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