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Sidana
2 months ago
7

Which statement explains why nuclear waste materials may pose aproblem?(1) They frequently have short half-lives and remain radi

oactive for brief periods of time.(2) They frequently have short half-lives and remain radioactive for extended periods of time.(3) They frequently have long half-lives and remain radioactive for brief periods of time.(4) They frequently have long half-lives and remain radioactive for extended periods of time.
Chemistry
2 answers:
castortr0y [3K]2 months ago
6 0
     Because they often have long half-lives, their radioactive persistence in the environment is lengthy.

Number 4

If you spot any errors in my English, please tell me, since I am not a native speaker.
lions [2.9K]2 months ago
6 0

Answer: The correct option is (4)

Explanation:

Nuclear waste is the leftover material after using nuclear fuel in a reactor. This waste is highly radioactive and toxic.

Because these radioactive substances have long half-lives, they remain radioactive for extended periods.

Their prolonged radioactivity creates significant challenges for specialists.

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Which of the following statements reasonably explains why this reaction has a low activation energy? View Available Hint(s) The
eduard [2782]

Answer;

Considering the types of bonds being created and severed in the transition state, the stability of this temporary structure is comparatively high.

Explanation;

  • The reaction can be expressed as follows; NO(g)+F2(g)→NOF(g)+F(g)
  • All chemical reactions, including exothermic ones, require activation energy to initiate. The activation energy is the least amount of energy needed for the reactants to come together, overcome opposing forces, and begin breaking bonds.
  • When molecules encounter each other, their kinetic energy may be sufficient to stretch, bend, and eventually break bonds, resulting in chemical reactions.
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3 months ago
A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of t
Tems11 [2777]
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O

v(H₂SO₄)=0.25 L
c(H₂SO₄)=2.00 mol/L
v(NaOH)=2.00 L

n(H₂SO₄)=c(H₂SO₄)v(H₂SO₄)
n(NaOH)=2n(H₂SO₄)=2c(H₂SO₄)v(H₂SO₄)

c(NaOH)=n(NaOH)/v(NaOH)=2c(H₂SO₄)v(H₂SO₄)/v(NaOH)

c(NaOH)=2*2.00*0.25/2.00=0.5 mol/L

the concentration of the NaOH solution is 0.5 mol/L
5 0
3 months ago
Read 2 more answers
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