(a)
Interpretation: To calculate the amount of sample that remains at the end of the reaction.
Concept Introduction: Half-life is the time needed for half the nuclei in a radioactive sample to decay into products. It is denoted by
(a)
Answer to Problem 15LC
The remaining amount of radioisotope is
Explanation of Solution
The half-life of a radioisotope is given which is
The amount of the sample is
The equation that is used to calculate the amount of radioisotope that remains in a sample can be given as follows:
Here,
Substituting
The remaining amount of radioisotope is
(b)
Interpretation: To calculate the amount of sample that remains at the end of the reaction.
Concept Introduction: Half-life is the time needed for half the nuclei in a radioactive sample to decay into products. It is denoted by
(b)
Answer to Problem 15LC
The remaining amount of radioisotope is
Explanation of Solution
The half-life of a radioisotope is given which is
The amount of the sample is
The equation that is used to calculate the amount of radioisotope that remains in a sample can be given as follows:
Here,
Substituting
The remaining amount of radioisotope is
Chapter 25 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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