Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
Gold-198 is used in the diagnosis of liver problems. The half-life of 198Au is 2.69 days. If you begin with 2.8 μg of this gold isotope, what mass remains after 10.8 days?
Interpretation: To calculate the remaining mass of
Concept introduction:
Half–life period: It is the time required for the reactant (substrate) concentration to reduce to the one-half of its initial concentration.
Given information is as follows:
The half-life
The initial concentration of gold isotope is
10.8 days equals to 4 half lives
Therefore the amount of Au remaining is
The remaining mass of
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