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3 years ago

What part of the cell contains most of the cell genetic information in the eukaryotic cell

Chemistry

1 answer:

kogti [31]3 years ago

5 0

The answer to that is the nucleus. the nucleus contains most of the genetic information in the eukaryotic cell.

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Calcium oxide and oxygen gas are produced by the thermal decomposition of limestone in the reaction CaCO (s) CaO(s) + CO (g). Wh

kozerog [31]

The mass of lime that can be produced from 4.510 Kg of limestone is calculated as below

calculate the moles of CaCO3 used

that is moles =mass/molar mass
convert Kg to g = 4.510 x1000 =4510g
= 4510 / 100 =45.10 moles
CaCO3 = CaO +O2

by use of mole ratio between CaCO3 to CaO (1:1) the moles of CaO is also= 45.10 moles
mass of CaO = moles x molar mass

45.10 x56 = 2525.6 g of CaO

6 0

3 years ago

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Which of the following is a buffer system? Which of the following is a buffer system? H2CO3(aq) and KHCO3(aq) NaCl(aq) and NaOH(

Readme [11.4K]

Answer:

Explanation:

A buffer is defined as an aqueous mixture of a weak acid and its conjugate base or vice versa.

In the systems:

H₂CO₃(aq) and KHCO₃(aq): Carbonic acid, H₂CO₃, is a weak acid that, in solution with its conjugate pair, HCO₃⁻ make a buffer system.

NaCl(aq) and NaOH(aq): NaCl is a salt and NaOH is a strong base. Thus, this system is not  a buffer system.

H₂O(l) and HCl(aq): Water is a solvent and HCl a strong acid. This is not a buffer system.

HCl(aq) and NaOH(aq): HCl is a strong acid and NaOH a strong base. This is not a buffer system.

NaCl(aq) and NaNO₃(aq): Both NaCl and NaNO₃ are salts and this system is not a buffer system.

3 0

3 years ago

What would happen to the ecosystem if there were no nitrogen-fixing bacteria

Gre4nikov [31]

Essentially all the available nitrogen for life in the form of nitrates and ammonia would eventually disappear. Nitrogen is needed to make proteins and other chemicals so it is required for all life to exist. It gets recycled so it would take many decades in most places before the available nitrogen ran out. Many crops like beans depend on it. Humans can manufacture it but it would be hard on the ecosystems of the world and eventually probably lead to the extinction of all the ecosystems of the world.

Hope this helps!

4 0

3 years ago

In 1901, Thomas Edison invented the nickel-iron battery. The follwing reaction takes place in the battery.

lys-0071 [83]

Answer: The number of moles of $Fe(OH)_2$ produced are, 3.60 moles.

Explanation :

First we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

$Fe(s)+2NiO(OH)(s)+2H_2O(l)\rightarrow Fe(OH)_2(s)+2Ni(OH)_2(aq)$

From the balanced reaction we conclude that

As, 1 mole of $Fe$ react with 2 mole of $NiO(OH)$

So, 3.60 moles of $Fe$ react with $3.60\times 2=7.2$ moles of $NiO(OH)$

From this we conclude that, $NiO(OH)$ is an excess reagent because the given moles are greater than the required moles and $Fe$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $Fe(OH)_2$

From the reaction, we conclude that

As, 1 mole of $Fe$ react to give 1 mole of $Fe(OH)_2$

So, 3.60 mole of $Fe$ react to give 3.60 mole of $Fe(OH)_2$

Therefore, the number of moles of $Fe(OH)_2$ produced are, 3.60 moles.

7 0

3 years ago

Which structure is found in all eukaryotic

velikii [3]

Answer:

Nucleus, golgi apparatus, cell membrane

8 0

2 years ago

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