Concept explainers
Interpretation:
Decay product of Americium-241 by alpha emission and amount of americium-241 left after radioactive decay for an elapsed time of 1000 yearsshould be determined.
Concept Introduction:
Radioactive decay is a process wherein a less stable radioactive nuclei form a more stable nuclei by loss of energy. This can be achieved by the loss of gain of elementary particles such as alpha, beta or positron particles. Alpha particles are nothing but a Helium nuclei (42 He). When a nucleus undergoes an alpha emission process, which is a type of elementary radioactive particle, the resulting product nuclei will have an
Radioactive decays follow first-order reaction kinetics.
For a first-order reaction the equation is:
where,
[A]t = concentration of substrate at time ‘t’.
[A]o = initial concentration of substrate at time ‘t=0’.
t = elapsed time.

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Chapter 9 Solutions
Introduction to General, Organic and Biochemistry
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- Consider the following decomposition reaction of N2O5(g): For the reaction 2 N2O5(g) → 4 NO2(g) + O2(g), the following mechanism has been proposed: N2O5 → NO2 + NO3 (K1) NO2 + NO3 → N2O5 (k-1) NO2 + NO3 → NO2 + O2 + NO (K2) NO + N2O5 → NO2 + NO2 + NO2 (K3) Indicate whether the following rate expression is acceptable: d[N2O5] = -k₁[N₂O₂] + K¸₁[NO₂][NO3] - K¸[NO₂]³ dtarrow_forwardIn a reaction of A + B to give C, another compound other than A, B or C may appear in the kinetic equation.arrow_forwardFor the reaction 2 N2O5(g) → 4 NO2(g) + O2(g), the following mechanism has been proposed: N2O5 →> NO₂+ NO3_(K1) NO2 + NO3 → N2O5 (k-1) NO2 + NO3 → → NO2 + O2 + NO (K2) NO + N2O5- NO2 + NO2 + NO2 (K3) d[N₂O5] __2k‚k₂[N2O5] Indicate whether the following rate expression is acceptable: dt k₁₁+ k₂arrow_forward
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