Problem: The radioactive isotope 19O, prepared by neutron irradiation of  19F, has a half life of 29 s. What percentage of a freshly prepared sample of 19O remains after 2.00 min? (a) 4.5% (b) 25% (c) 5.7% (d) 18% (e) 69%

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Problem Details

The radioactive isotope 19O, prepared by neutron irradiation of  19F, has a half life of 29 s. What percentage of a freshly prepared sample of 19O remains after 2.00 min?

(a) 4.5%

(b) 25%

(c) 5.7%

(d) 18%

(e) 69%

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Our tutors have indicated that to solve this problem you will need to apply the First Order Half Life concept. You can view video lessons to learn First Order Half Life. Or if you need more First Order Half Life practice, you can also practice First Order Half Life practice problems.

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