Answered

Explore IDNLearn.com to discover insightful answers from experts and enthusiasts alike. Discover reliable answers to your questions with our extensive database of expert knowledge.

Assume a parent isotope has a half-life of 100 million years. How old is a sample that
contains 15% of its original parent isotope?
250 million years
270 million years
200 million years
100 million year

Assume A Parent Isotope Has A Halflife Of 100 Million Years How Old Is A Sample That Contains 15 Of Its Original Parent Isotope 250 Million Years 270 Million Ye class=

Sagot :

Answer:

270 million

Explanation:

1/2 ^n  = .15            (.15 is 15% in decimal)

                    log both sides

n log (1/2) = log (.15 )

   n = 2.737 half lives

EACH half life is 100 million

      2.737 * 100 million = 273.7 million

We are delighted to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. Find reliable answers at IDNLearn.com. Thanks for stopping by, and come back for more trustworthy solutions.