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frutty [35]
3 years ago
14

Which of the following are characteristics of vertebrates?

Chemistry
2 answers:
djverab [1.8K]3 years ago
5 0
<span><u><em>Answer:</em></u>
All of the above

<u><em>Explanation:</em></u>
Vertebrates are a class of creatures falling under kingdom "<u>Animalia</u>" that are characterized by the presence of an internal skeleton composed of bones.

<u>Vertebrates are characterized by the following:</u>
1- presence of internal skeleton
2- developed brain
3- the presence of an advanced nervous system connected to the brain
4- presence of muscles that allow movement
5- protective skin
6- circulation of blood in the bodies in the vessels

Comparing the mentioned characteristics with the options given, we will find that the most suitable answer is: <u>"all of the above"</u>.

Hope this helps :)</span>
Naddika [18.5K]3 years ago
3 0

Answer:

The correct answer is option D, that is, all of the above.

Explanation:

Vertebrata refers to the subphylum of Chordata, which is further illustrated by their bony backbone. Vertebrates comprise the members of the subphylum Vertebrata, which comes under the kingdom Animalia and under the phylum Chordata.  

The following are the characteristics of Vertebrates:  

1. Developed brain.  

2. Existence of an internal skeleton.  

3. Presence of muscles, which helps in movement.  

4. The existence of an advanced nervous system associated with the brain.  

5. Circulation of blood in the bodies via vessels.  

6. Protective skin.  

Hence, the correct answer is option D, that is, all of the above.  

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6 0
3 years ago
Which of the following statements correctly distinguishes between an acidic and a basic solution?
MrRissso [65]
<span>An acidic solution has only hydrogen ions and a basic solution has only hydroxide ions </span>statement correctly distinguishes between an acidic and a basic solution
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3 years ago
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18.73× 10²³ formula units

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Avogadro number:  

"It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance"  

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of formula units of Ca(NO₃)₂:

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balu736 [363]

The answer for the following problem is mentioned below.

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Explanation:

 Given:

Initial pressure (P_{1}) = 600 mm of Hg

Final pressure (P_{2}) = 1200 mm of Hg

Initial volume (V_{1}) = 200 ml      

To find:

Final volume (V_{2})

We know;

According to the ideal gas equation,

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Where;

P represents the pressure of the gas

V represents the volume of the gas

n represents the no of moles of the gas

R represents the universal gas constant

T represents the temperature of the gas

So,

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Where,

(P_{1}) represents the initial pressure of the gas

(P_{2}) represents the final pressure of the gas

(V_{1})  represents the initial volume of the gas

(V_{2})  represents the final volume of the gas

So;

\frac{600}{1200} = \frac{V_{2} }{200}    

V_{2} = 100 ml

<u><em>Therefore the final volume of the gas is 100 ml.</em></u>                                                                                                                                                                              

5 0
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