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The graph shows the radioactive decay of a bone that is found to contain 1/4 of the carbon-14 found in living animals today.
Approximately how old is the bone?
What is Half-life?
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
The half life of iodine-131 is 8 days. What percentage of an iodine-131 sample will remain after 40 days?
After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged. What was the original mass of the sample?
What is the half-life of iodine-131?
What percent of carbon-14 would be left after 11,460 years?
If one-eigth of the carbon-14 is remaining then how many half-lives have passed?
What percent of carbon-14 would be left after 5,730 years?
What percent of iodine-131 remains after approximately 27 days?