A radioactive element decays with a half-life of 100 years. If there are 10 grams of...
The half-life of the radioactive element unobtanium-43 is 10 seconds. If 176 grams of unobtanium-43 are initially present, how many grams are present after 10 seconds? 20 seconds ? 30 seconds? 40 seconds? 50 seconds? The amount left after 10 seconds is grams The half-life of the radioactive element unobtanium-43 is 10 seconds. If 176 grams of unobtanium-43 are initially present, how many grams are present after 10 seconds? 20 seconds? 30 seconds? 40 seconds? 50 seconds? The amount left...
These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? These questions are about radioactive half-life 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? 22.
These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the 22. sample?
A radioactive element decays according to the function y=y0 e −0.0307t, where t is the time in years. If an initial sample contains y0 = 8 grams of the element, how many grams will be present after 20 years? What is the half-life of this element?
You have 86.237g of a radioactive element with a half-life of 43.91minutes. After 3.09 half-lives have passed, how many grams of the radioactive element remain? Report your answer to 2 decimal places.
You have 82.173g of a radioactive element with a half-life of 53.39minutes. After 4.05 half-lives have passed, how many grams of the radioactive element remain? Report your answer to 2 decimal places. Answer 4.96
An unknown radioactive element decays into non-radioactive substances. In 760 days the radioactivity of a sample decreases by 77 percent.(a) What is the half-life of the element?half-life: (days)(b) How long will it take for a sample of 100 mg to decay to 68 mg?time needed: (days)
224. You have 83.525g of a radioactive element with a half-life of 52.01minutes. After 254.3 minutes have passed, how many grams of the radioactive element remain? Report your answer to 2 decimal places.
Find the half-life of a radioactive element, which decays according to the function A(t)=A0e−0.0372t, where t is the time in years.
(2 points) An unknown radioactive element decays into non-radioactive substances. In 520 days the radioactivity of a sample decreases by 63 percent. (a) What is the half-life of the element? half-life: (days) (b) How long will it take for a sample of 100 mg to decay to 84 mg? time needed: (days)