Use the table on the right to answer thefollowing questions.11. How long is a half-life for carbon-14?Redioective Dacay of Carbon-1410075%Amount12. If only 25% of the carbon-14 remains,how old is the material containing thecarbon-14?carbon1450%+25%12.5%-13. If a sample originally had 120 atoms ofcarbon-14, how many atoms will remainafter 16,110 years?5730Tirm yH)14. If a sample known to be about 10,740 years old has 400 carbon-14 atoms, how many atoms were inthe sample when the organism died?The table below shows the radioactive decay of a 600 g sample of lodine-125.Time(days)Half-Lives% of Parent IsotopeRemalningFraotion of ParentTrotope RemalningMars (9) of ParentIrotopeMars (0) of DaughterIrotope100%1/16000.601.50%1/23003001202.25%1/4150450180312.5%1/87532524048.25%1/1637.5562.53003.125%1/3218.75581.253806.1.56%1/649.4590.615. What percent of iodine is left if 5 half-lives have passed?16. What percent of iodine-125 has decayed if there are 37.5 grams of theoriginal sample left?17. What is the half-life of lodine-125?18. What mass of the lodine-125 has decayed after 6 half-lives?19. What fraction of the lodine-125 remains after 300 days have passed?20. How many half-lives would have to pass for there to be only 1.2 grams remaining?21.How many grams of the daughter isotope are there after three half-lives?

Note : As per our guidelines , we are supposed to answer only subparts of first question (11 to 14)…

Use the table on the right to answer the following questions. 11. How long is a half-life for carbon-14? Redioactive Dacay of Carbon-14 100 75% Amount 12. If only 25% of the carbon-14 remains, how old is the material containing the carbon-14? carben 14 50% 25%- 12.5%- 13. If a sample originally had 120 atoms of carbon-14, how many atoms will remain after 16,110 years? 5730 Tirm y 14. If a sample known to be about 10,740 years old has 400 carbon-14 atoms, how many atoms were in the sample when the organism died?