Ask Question
30 October, 14:39

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?

A.

75 g

B.

50 g

C.

100 g

D.

25 g

+3
Answers (1)
  1. 30 October, 15:43
    0
    25g

    Explanation:

    Given parameters:

    Half life of X = 5days

    Mass of sample of radioactive elements = 100g

    The half-life of a radioactive material is the time it takes for a sample to decay by half. At the half-life, an original sample would have yielded equal daughter to parent ratio.

    At time (days) Mass of sample

    0 100g

    5 50g

    10 25g

    Every 5 days, the sample will split into half.

    Therefore, 25g will remain after 10days.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed? A. 75 g B. ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers