The half-life of a radio-active substance is 138 days. A sample of the substance has 8 x 1010 un-decayed nuclei at time t = 0....

      

The half-life of a radio-active substance is 138 days. A sample of the substance has 8 x 1010 un-decayed nuclei at time t = 0. How many un-decayed nuclei will be left after 690 days?

  

Answers


sharon
p5420191748.png
sharon kalunda answered the question on April 5, 2019 at 14:48


Next: Radium -222 is a radioactive element with a half-life period of 38 sec. What fraction of the mass of a sample of this element remain after...
Previous: An element x (uranium) decays by emitting two alpha particles and a beta particle to yield element Y

View More Physics Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions