Interpretation:
The given graph is to be described.
Concept introduction:
An unstable atomic nucleus loses energy through radiation during the process of radioactive decay. A substance is regarded as radioactive if it has unstable nuclei.
Answer to Problem 90A
The percentage of isotopes
Explanation of Solution
The graph given below represents the plot of time (in a year) given on the x-axis versus the percentage of two isotopes (
As time goes on we can see that the percentage of isotope carbon-14 (
This process that is given on the graph can be represented as the following nuclear equation:
- The radioactive beta decay of C-14 (exponential downward curve)
- The subsequent increase of nitrogen-14 product (the result of the carbon decay).
Chapter 25 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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