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sdas [7]
3 years ago
7

Someone, please help!

Biology
1 answer:
Andrej [43]3 years ago
4 0

Answer:

Step 2: The right ventricle pumps the oxygen poor blood to the lungs via pulmonary valve. Step 3: The left atrium receives oxygen -rich blood and pumps it to the left ventricle. Step 4: The left ventricle pumps the oxygen-rich blood via aortic valve, submitting this blood through the entire body.

Explanation:

Use this website if you need more information. Good luck.

https://wa.kaiserpermanente.org/kbase/topic.jhtml?docId=tx4097abc

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A bond of the following elements would be of what type? Na + Cl <br><br> Covalent or ionic
nikklg [1K]

Answer:

ionic

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.  

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.

There are one valance electron in sodium so it needed to lose one valance electrons to complete the octet while chlorine needed one electron to complete the octet. Thus electrons lost by sodium atom is gained by atom of chlorine and form ionic compound.

2Na + Cl₂ → 2NaCl

6 0
3 years ago
Why are some molecules polar and others non polar
Gennadij [26K]

Answer:

Polarity and Non-polarity of molecules depend upon the electronegativity. The theory of electronegativity lies in entire inorganic chemistry. The more electronegative an atom, the more it seeks electrons. If one atom is more electronegative than others, it can form an ionic bond or a polar covalent bond.

Explanation:

6 0
3 years ago
How is relative-age dating used to determine the ages of fossils?
tino4ka555 [31]

Your answer should be A. by observing the formation of sedimentary rocks.

6 0
4 years ago
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When given a scientific name, what is the LAST portion of it?
vazorg [7]
Answer:

Specific epithet

Explanation:

The binomial nomenclature system combines two names into one to give all species unique scientific names. The first part of a scientific name is called the genus. The second part of a species name is the specific epithet.
6 0
3 years ago
the combined chemical and electrical potential differences that are created across membranes, such as the plasma membranes of pr
Anuta_ua [19.1K]

The Proton motive force is the collective name for the chemical and electrical potential differences that are produced across membranes, such as the plasma membranes of prokaryotes.

<h3>What is plasma, exactly?</h3>

After red blood cells, white blood cells, platelets, and other cellular components have been eliminated, plasma is the clear, straw-colored liquid fraction of blood that is left. Water, salts, enzymes, antibodies, and other proteins are all present in the blood's biggest component, which accounts for around 55% of the total volume.

<h3>What use does plasma serve?</h3>

55% of the total volume of your blood is made up of the liquid substance called plasma. In addition to moving throughout your circulatory system, plasma is essential for your body's ability to heal after injury, distribute nutrients, remove waste, and prevent infection.

To know more about  plasma membranes visit :

brainly.com/question/14015347

#SPJ4

5 0
1 year ago
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