Q10. Estimate the age of a wooden sample from an archaeological site, given its ¹4C content is 18% of the expected modern ¹4C content. With a half-life of ¹4C 5730 years, calculate the age of the wood.
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- Needs Complete solution. Plz.A piece of charcoal (totally carbon) from an ancient campsite has a mass of 262 grams. It is measured to have an activity of 29 Bq from 14C decay. Use this information to determine the age of the campfire. Your answer is required to be in years. Information: 14C half-life is 5730 years. 1 gram of living carbon has 6.52x1010 atoms of 14CWhat is the nuclear equation for Th (beta decay)? (Just enter a, b, c or d without a period). 90 235 a. 334TH 90 b. 234 Th 234 Ac + e 90 89 4 Pa + °1e 234 c. 30 Th d. 84TH - 1 Pa + °e 90 O a O b O c « Previous MacBook Pro
- 5. A sample of protactinium -234 of mass 100 g has a half-life of G-7 hours. A. what praction of the sample has not decayed after 20-1 hours? B. What is the mass of undecayed protactinium -234 after this period of time...I need help on this question7. One of the many isotopes used in cancer treatment is 198 Au, with a half-life of 2.70 d. Determine the mass of this isotope that is required to give an activity of 225 Ci. mg VJSS f60 ssf ( sf60 ssf
- If a tree dies and the trunk remains undisturbed for 1.500 × 10⁴ years, what percentage of the original ¹⁴C is still present? (The half-life of ¹⁴C is 5730 years.) ____%Part 2: Rubidium-Strontium dating A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because 87Rb, which has a half-life of 4.75x1010 y, undergoes ß decay and becomes 87 Sr. The geologist determines that the ratio of 87 Sr to 87Rb is 0.136. Assuming there was no 87 Sr in the rock when it was formed, determine the age of the rock. age of rock =32NE decays by B decay. Which of these is the correct reaction? 10 Select one: of 1 O a. 3 Ne B + 3F 10 1. tion O b.Ne → °B+ 3}F 10 O c. Ne → _°ß+ {Na B+Na. 32 11 10 O d. Ne B+ Na 33 Na 08 10 2 The half-life of 2 U is 70 years. How long would it take for all but 232