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Zinaida [17]
3 years ago
6

_____ is a gel-like substance enclosed by the cell membrane that contains the cell's organelles. A) chloroplast B) cytoplasm C)

nucleus D) protein
Chemistry
2 answers:
stepan [7]3 years ago
7 0

Answer: The correct answer for the blank is-

B) cytoplasm.

Cytoplasm is the fluid filled compartment ( a thick, gel like substance) within the cell of a living organism that is mainly composed of water, salts, and proteins. It is surrounded by the cell membrane ( plasma membrane) and contains all the parts of cell ( such as in eukaryotic cell, it contains all the cell organelles except nucleus). It is the site for all the essential cellular processes.

Thus, option B) is the right answer.  

Molodets [167]3 years ago
5 0

Answer: Option (B) is the correct answer.

Explanation:

  • In a living organism, the cell which is mostly composed of water, salts and proteins is known as cytoplasm.

It is thick and gel like in nature which has fluid filled compartment.

  • A chloroplast is an organelle found in the cells of plants and eukaryotic algae which are responsible for the conduction of photosynthesis.
  • Nucleus is an organelle present in eukaryotic cells. It contains hereditary information of a cell and helps in controlling the growth and reproduction of cells.
  • Polymers of amino acids are known as proteins. Each protein has some specific functions.

Thus, we can conclude that out of the given options cytoplasm is a gel-like substance enclosed by the cell membrane that contains the cell's organelles.

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Answer:

44 g oxygen are needed.

Explanation:

Given data:

Mass of oxygen needed = ?

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Solution:

Chemical equation:

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Now we will calculate the number of moles of ammonia:

Number of moles = mass/molar mass

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Number of moles = 1.1 mol

Now we will compare the moles of ammonia with oxygen from balance chemical equation.

                        NH₃              :                O₂

                          4                 :                 5

                          1.1                :              5/4×1.1 = 1.375 mol

Mass of oxygen needed:

Mass = number of moles × molar mass

Mass = 1.375 mol × 32 g/mol

Mass = 44 g

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Answer:

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Explanation:

Several rules should be followed to write any equilibrium expression properly. In the context of this problem, we're dealing with an aqueous equilibrium:

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  • in the numerator of the fraction, we have a product of the concentrations of our products (right-hand side of the equation);
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Following the guidelines, we will omit liquid water and we will include all the other species in the constant. Each coefficient in the balanced equation is '1', so no powers required. Multiply the concentrations of the two products and divide by the concentration of carbonic acid:

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