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STALIN [3.7K]
2 years ago
14

What does the nucleus of the cell control?

Chemistry
1 answer:
dusya [7]2 years ago
7 0

Answer:

Image result for What does the nucleus of the cell control?

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Explanation:

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Rank the following atoms by number of valence electrons. Rank from most to fewest valence electrons. To rank items as equivalent
Fed [463]

To count the number of valence electrons we look at the electronic configuration and add the electrons form the electronic shell with the highest principal quantum number.

Rb: [Kr] 5s¹ - 1 valence electron

Xe: [Kr] 5s² 4d¹⁰ 5p⁶ - 8 valence electrons

Sb: [Kr] 5s² 4d¹⁰ 5p³ - 5 valence electrons

I:    [Kr] 5s² 4d¹⁰ 5p⁵ - 7 valence electrons

In:  [Kr] 5s² 4d¹⁰ 5p¹ - 3 valence electrons

Rank from most to fewest valence electrons:

Xe > I > Sb > In > Rb

6 0
3 years ago
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Which of the following claims are based on scientific evidence? Red sky at night sailors' delight, red sky in morning sailors ta
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I would believe that the  answer to this question would be the "Touching toads gives you warts
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2 years ago
Why are red blood cells red
KonstantinChe [14]

Red blood cells are red because they contain Haemoglobin

8 0
3 years ago
How many moles of sucrose<br> are in 5.25x1029 sucrose<br> molecules?
Pavel [41]

Answer:

872093.02moles

Explanation:

Given parameters:

Number of atoms of Sucrose  = 5.25 x 10²⁹atoms

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.

             6.02 x 10²³ atoms makes up 1 mole of an atom

             5.25 x 10²⁹ atoms will contain = \frac{5.25 x 10^{29} }{6.02 x 10^{23} }  = 872093.02moles

4 0
2 years ago
SO2 reacts with O2 to produce SO3. If 86.0 g of SO2 is placed in a reaction vessel along with excess oxygen gas, how many moles
Salsk061 [2.6K]

Answer:

0,72 moles of SO₂ remain

Explanation:

The reaction is:

2SO₂ + O₂ → 2SO₃

Where molecular mass of SO₂ is 64,066g/mol and of SO₃ is 80,066g/mol.

86,0g of SO₂ are:

86,0g × (1mol / 64,066g) = <em>1,34 moles of SO₂</em>.

50,0g of SO₃ are:

50,0g × (1mol / 80,066g) = <em>0,62 moles of SO₃</em>.

Now, as 2 moles of SO₂ produce 2 moles of SO₃, the moles of SO₂ that remain after the reaction are the initial moles of SO₂ - moles of SO₃:

1,34 moles - 0,62 moles =

<em>0,72 moles of SO₂ remain</em>

I hope it helps!

7 0
2 years ago
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