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borishaifa [10]
3 years ago
13

Similarities between plant cell,prokaryote cell and eukaryotic cell

Biology
1 answer:
Dafna1 [17]3 years ago
7 0

Answer:

In structure, both animal and plant cells are quite similar. Both possess nucleus and plasma membrane, a selectively permeable membrane of the cell. Both animal and plant cells include membrane-bound organelles with their specialized functions.

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Which coast of north America has the greater amount of earthquakes, volcanoes and mountain s?
tangare [24]

Answer:

There are more earthquakes on the West coast of the United States, because the boundaries of the North American, Pacific, and Juan de Fuca tectonic plates are located there. As the edges of the plates slide past or are forced under each other, the movement creates earthquakes

6 0
2 years ago
A normal breath takes in about 1.0 L of air. If air has an average molar mass of 28.8 g per 1 mol and has a density of 0.97 g/mL
Ann [662]

Taking into account the definition of density and Avogadro's Number, you take 2.0286×10²⁵ molecules of air.

<h3>What is density</h3>

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

<h3>What is Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>Amount of molecules of air</h3>

In this case, you know that:

  • Density= 0.97 \frac{g}{mL}
  • Volume= 1 L= 1000 mL

Replacing in the definition of density:

0.97 \frac{g}{mL}=\frac{mass}{1000 mL}

Solving:

mass= 0.97 \frac{g}{mL}  ×1000 mL

<u><em>mass= 970 g</em></u>

Air has an average molar mass of 28.8 g per 1 mol. Then 970 grams are contained in 33.68 moles.

Now, considering the definition of Avogadro's number you can apply the following rule of three: If 1 mole of air contains 6.023×10²³ molecules, 33.68 moles contains how many molecules?

amount of molecules = (33.68 moles× 6.023×10²³ molecules)÷ 1 mole

<u><em>amount of molecules= 2.0286×10²⁵ molecules</em></u>

Finally, you take 2.0286×10²⁵ molecules of air.

Learn more about

density:

brainly.com/question/952755

brainly.com/question/1462554

Avogadro's Number:

brainly.com/question/11907018

brainly.com/question/1445383

brainly.com/question/1528951

#SPJ11

4 0
1 year ago
All life must maintain an internal balance, despite environmental changes. This is called
zubka84 [21]
Ying and yang is the answer to the question
7 0
3 years ago
Whats the meaning of cohesion
Tema [17]

Answer:the action or fact of forming a united whole.

"the work at present lacks cohesion"

Similar:

unity

togetherness

solidarity

bond

sticking together

continuity

coherence

connection

linkage

interrelatedness

PHYSICS

the sticking together of particles of the same substance.

Explanation:

7 0
3 years ago
What gives the gem amethyst is purplish color?
velikii [3]
Gem amethyst turns purple because of the irradiation with iron. Answer is Iron.
4 0
3 years ago
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