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Alex787 [66]
1 year ago
9

Relate dark matter to the development of the universe after the Big Bang. In 3-5 sentences, speculate on how the development of

the universe would have been different if there had been no dark matter. In your answer, use the term structures.
Please answer if you do i will mark you as brainliest
Chemistry
1 answer:
Alecsey [184]1 year ago
3 0

Answer:

Without dark matter galaxies would loose an extreme amount of gas required to create stars.

Without dark matter the universe wont have as many galaxies clumped together forming larger versions of those galaxies. This would cause a change in the structure of the "skeleton" of the web.

(Hope this can help, I didn't do exactly as it is said to because that is your job)

:)

Explanation:

Forbes gives somewhat of an explanation if you are curious.

(Ethan Siegal, "The Universe Would Be Very Different Without Dark Matter", Forbes)

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For double-helix formation, change in Gibbs free energy, ΔG, can be measured to be −54 kJ⋅mol−1 (−13 kcal⋅mol−1) at pH 7.0 in 1
77julia77 [94]

Answer:

Explanation:

Entropy change in the system : --

ΔG =   −54 kJ⋅mol−1 (−13 kcal⋅mol−1)  =   −54 kJ⋅mol−1 (−13 x 4.2  kJ⋅mol−1)

= - 108.6  KJ / mol

ΔH =  -251 kJ/mol (-60 kcal/mol) =  -251 kJ/mol (-60 x 4.2  kJ/mol)

= - 503  KJ / mol

ΔG = ΔH - TΔS

ΔS = ( ΔH - ΔG ) / T

=  - 503 + 108.6 / ( 273 + 25 ) KJ / mol k⁻¹

= - 1323.48 J / mol k⁻¹

Entropy change in the surrounding

+ 1323.48 J / mol k⁻¹

7 0
2 years ago
From the Bohr equation in the introduction, the calculated energy of an electron in the sixth Bohr orbit of a hydrogen atom is
Natalka [10]

Answer:

<em><u>= - 0.38 eV</u></em>

Explanation:

Using Bohr's equation for the energy of an electron in the nth orbital,

E = -13.6 \frac{Z^{2} }{n^{2} }

Where E = energy level in electron volt (eV)

Z = atomic number of atom

n = principal state

Given that n = 6

⇒ E = -13.6 × \frac{1^{2} }{6^{2} }

<em><u>= - 0.38 eV</u></em>

<em><u></u></em>

<em>Hope this was helpful.</em>

<em><u></u></em>

4 0
2 years ago
When HCl(g) reacts with NH3(g) to form NH4Cl(s) , 176 kJ of energy are evolved for each mole of HCl(g) that reacts. Write a bala
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Answer:

q = -176kJ

Explanation:

HCl and NH3 reacts as following to NH4Cl

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Clearly,

ENERGY IS EVOLVED MEANING IT IS A EXOTHERMIC REACTION .

therefore, the value of heat evolved as q = -176kJ

8 0
2 years ago
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chubhunter [2.5K]

Answer:

Explanation:

Answer in attached file .

8 0
2 years ago
Which statement explains why nuclear waste materials may pose aproblem?(1) They frequently have short half-lives and remain radi
nalin [4]
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Number 4

If you notice any mistake in my english, please let me know, because i am not native.
6 0
2 years ago
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