Answer:
I think it's a or c let me look at it one more time hold on!!
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119.84 degrees c is your answer.
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Answer:
0.013 M/s
Explanation:
Given data
- Initial concentration of BrO⁻: 0.56 M
- Final concentration of BrO⁻: 0.14 M
Since the final concentration of BrO⁻ is lower than the initial concentration of BrO⁻, BrO⁻ is dissapearing. The rate of dissapearance of BrO⁻ is:
rBrO⁻ = - Δ [BrO⁻] / t
rBrO⁻ = - (0.14 M - 0.56 M)/ 33 s
rBrO⁻ = 0.013 M/s
Answer:
Explanation:
Radioactive decay follows the equation:
Ln [A] = -kt + ln [A]₀
<em>Where [A] is amount of isotope after time t: Our incognite,</em>
<em>k is rate constant: ln 2 / Half-life = 0.0231 years⁻¹</em>
<em>t are 60 years</em>
<em>[A]₀ is initial amount of isotope: 1.0g</em>
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Replacing:
Ln [A] = -kt + ln [A]₀
Ln [A] = -0.0231 years⁻¹*60 years + ln 1.0g
ln [A] = -1.386
[A] = 0.25g
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