The radioactive isotope_14^219 Po has a half-life of 103 years. How long would i

Question

The radioactive isotope_14^219 Po has a half-life of 103 years. How long would it take for only 4.00 g to remain from an original 256 g sample? A. 412 Years B. 618 Years C. 4.00 Years D. 309 Years Based on the above graph, what is the time required for 60.0 g of the sample to decay to 7.50 g? A. 4.8 hours B. 6.0 hours C. 5.4 hours D. 4.2 hours Complete the following fission reaction:_92^235 U +_0^2 n rightarrow_56^141 Ba + (3)_0^1 n +_cd^ab X The values of ab, cd, and X are A. 94.36, and kr. B. 92.36, and Kr. C. 92.36, and rb. D. 93.36, and rb.

Explanation / Answer

Ans) 4/256 = 1/ 64

now recognize 1/64 as a fraction of 6 half lives.

103 years * 6 = 618years

hence option b is correct

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.