Explore BrainMass

Explore BrainMass

    Radioactive Nuclei.

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    I'm not sure my answer is right.

    7. A sample of a radioactive isotope is found to have an activity of 115 Bq immediately after it is pulled from the reactor that formed it. Its activity 2 hours and 15 minutes later is measured to be 85.2 Bq. (a) Calculate the decay constant and the half-life of the sample. (b) How many radioactive nuclei were there in the sample initially?

    © BrainMass Inc. brainmass.com March 5, 2021, 12:29 am ad1c9bdddf

    Solution Preview

    Hello and thank you for posting your question to Brainmass.
    The solution is attached below in two files. the files are identical in content, only differ in format. The first is in MS Word format, while the other is in Adobe pdf format. ...

    Solution Summary

    The expert examines radioactive nuclei.