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arsen [322]
3 years ago
15

At what phase of mitosis are two separate nuclei are formed as nuclear membranes form around

Chemistry
2 answers:
jeka57 [31]3 years ago
5 0
Probably telophase because for the difference in the nuclear membrane
GenaCL600 [577]3 years ago
3 0

Answer:

Telophase.

Explanation:

Mitosis is cell division in which the parent has the ability to divide and produce two respective daughter cells. The genetic constitution of the parent and daughter cells remain same after cell division.

Different mitosis satges are prophase, metaphase anaphase and telophase. The telophase is the last stage of mitosis. The nucelar envelope orms, cell organelles starts forming and the two nuclei of the separate cells are formed in the telophase. This stage is followed by cytokinesis.

Thus, the correct answer is option (2).

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Use standard enthalpies of formation to calculate ΔH∘rxn for the following reaction______.2H2S(g)+3O2(g)→2H2O(l)+2SO2(g) ΔH∘rxn
Ahat [919]

Answer:

-1,103.39KJ/mol

Explanation:

We use the subtract the standard enthalphies of formation of the reactants from that of the products. It must be taken into consideration that the enthalpy of formation of elements and their molecules alone are not taken into consideration. Hence, what we would be considering are the standard enthalpies of formation of H2S, H2O and SO2.

In places where we have more than one mole, we multiply by the number of moles as seen in the balanced chemical equations.

The standard enthalpies of the molecules above are as follows:

H2S = -20.63KJ/mol

H2O = -285.8KJ/mol

SO2 = -296.84KJ/mol

O2 = 0KJ/mol

ΔrH⦵ = [2ΔfH⦵(H2O) + 2 ΔfH⦵(SO2)] − [ΔfH⦵(H2S) + 3

 ΔfH⦵(O2)]

ΔrH⦵ =[(2 × -285.8) + (2 × -296.84)]

-[ 3 × -20.63)]

= (-571.6 - 593.68 + 61.89) = -1,103.39KJ/mol

6 0
3 years ago
Are the following statements true or false? (a) Formal charges represent an actual separation of charges. true false (b) ΔH o rx
katrin [286]

Answer:

Explanation:

A) Formal charges represent an actual separation of charges.(FALSE)

(B) ΔHo rxn can be estimated from the bond enthalpies of reactants and products.(TRUE)

C)All second-period elements obey the octet rule in their compounds(FALSE).

(D)The resonance structures of a molecule can be separated from one another in the laboratory.(FALSE)

Bond enthalpy which is also reffered to as bond energy is the amount of energy that is required to break one mole of a bond.

taking the single bond between Oxygen and Hydrogen into considerationthe bond energy between their single bond is 463 kJ/mol.

formal charge is used for the comparison of the number of electrons present around an atom in a particular molecule with the number of electrons present around a neutral

3 0
2 years ago
Select all the signs of a CHEMICAL change from the list below. (You may need to select more than one for full points)
wlad13 [49]

The answers are B, C, and D.

4 0
3 years ago
Read 2 more answers
What happens during every chemical change?
Aneli [31]
The chemical make-up changes.
6 0
3 years ago
Read 2 more answers
2. What does the text list and describe?
Mariana [72]

Answer:

C. ways radiation is transferred into and through Earth's atmosphere

Explanation:

6 0
3 years ago
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