If you have 100 grams of a radioactive isotope with a half life of 10 years. If the initial mass of the sample is 1 00kg how much will remain after 151 years.
Half life practice 1.
Half life practice worksheet answers what is meant by half life. Half life practice problems 3 1. Chromium 48 has a short half life of 21 6 hours. Carbon 14 is a radioactive isotope found in small amounts in all living things.
After 42 days a 2 0 g sample of phosphorus 32 contains only 0 25 g of the isotope. How old is the sample. What is the half life of a 100 0 g sample of nitrogen 16 that decays to 12 5 g of nitrogen 16 in 21 6 s.
How many half lives will occur in 40 years. Half life of radioactive isotopes docx sh jir open new. After 4 half lives 10 grams of uranium.
If the half life of iodine 131 is 8 10 days how long will it take a 50 00 g sample to decay to 6 25g. The half life of hafnium 156 is 0 025 seconds. Half life 15min after 3 half lives it has been reduced by 1 x 1 x 1 1 2 2 2 8 so after 45 minutes 1 8 x 1 gram 0 125 grams remains.
Half life number of number radioactive atoms 0 4000 1 2000 2 1000 3 500 4 250 5 125 half life data teacher answer key 1 hypothesize what half lifeis. Sodium 24 has a half life of 15 hours. The half life of cobalt 60 is 5 26 years.
The following quiz and worksheet will help measure your knowledge of half lives in medicine. Half life of radioactive isotopes name. Some of the worksheets for this concept are half life work atoms half life questions and answers half life of paper mms pennies puzzle pieces licorice half life ws radioactive decay half life work half life practice work.
After 3 half lives how much of a 400 gram sample of radioactive uranium remains. How long will it take a 560 g sample to decay to one fourth of its original mass. 12 5 of a radioactive sample are left.
Polonium 214 has a relatively short half life of 164 seconds. About this quiz worksheet. The half life of plutonium 239 is 24 300.
Edit your docs with microsoft word online. How many half lives have passed. How much sodium 24 will remain in an 18 0 g sample after 60 hours.
How much of the isotope will you have left after 20 years. The half life of cs 137 is 30 2 years. How much of the isotope will you have left after 10 years.
Half life with answer displaying top 8 worksheets found for this concept. How many half lives have passed in 10 52 years. Answer questions about terminology and different effects.
It now contains 1 5g. What is the half life of phosphorus 32. Consider a sample of fossilized wood that when alive would have contained 24g of c 14.
Carbon 14 has a half life of 5730 years. Half life is the amount of time it takes for approximately half of the radioactive atoms in a sample to decay intoa more stable form. All isotopes of technetium are radioactive but they have widely varying half lives.
When the living thing dies the carbon 14 begins to decay at a steady rate with a half life of 5 730 years. What is meant by half life. Half life practice worksheet name period date l.