Radium-226 is radioactive and has a half life of 1600. years. How long would it take a sample to decay from 6.90 mg to 300. ug. Round your answer to 2 significant digits. years の

Q: Using the equation () Calculate the amount left of a radioactive sample amount N0 if the deacy…

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Q: Strontium-90 is radioactive and has a half life of 28.8 years. How much of a 5.20 mg sample would be…

A: Given: Half life=28.8 years Time=127 years Initial concentration=5.20mg Since it is radioactive…

Q: . A radioactive isotope has a half-life of 10 years. What fraction of the original mass will remain…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 90 Complete the decay equation: Sr -→ »Y + A. B + anti-neutrino B. B + neutron C. B + neutrino D. B…

A: In B- decay one neutron gets converted in to an electron along with anti neutrino.

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. How long would it take a sample to decay…

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Q: The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is…

A: Amount of rubidium = 123.0  μg  Amount of strontium = 5.5 μg Half life time of rubidium = 4.8 × 1010…

Q: Cesium-137 is radioactive and has a half life of 30. years. How much of a 6.90 mg sample would be…

A: Given: Cesium-137 has a half life=30 years Initial amount = 6.90 mg Time= 142 years To calculate:…

Q: The isotope 232Th decays to 208Pb by the emission of six alpha particles, with a half-life of 1.39 ×…

A: Given: Final amount of thorium = 7.4 mg Volume of helium gas     = 4.9 x 10-3 cm3 Half life of decay…

Q: 6C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average…

A: The half life is given as 5730 years Average Decay per Second = 10

Q: How many protons does Promethium-145 have? b). How many neutrons does Promethium-145 have?…

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Q: Phosphorus-32 is radioactive and has a half life of 14.3 days. What percentage of a sample would be…

A: Given,Half-life of Phosphorus-32 = 14.3 days.Percentage of sample left after 31.7 days has to be…

Q: 2Bi is a radioactive isotope of the element bismuth with a half-life of 19.7 minutes. What…

A: Given: half-life of isotope of bismuth is 19.7 minutes.

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: All radioactive decay processes follows first order kinetics. Half life t12 is the time taken to…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 g of 32P, how many grams will remain…

A: Given: The half-life of phosphorus -32 =14.0 days i.e. t1/2=14.0 days Starting amount of P=6.00 g

Q: Iodine-125 has a half-life of 60.4 days and is used in radiation therapy to treat prostate cancer…

A: Since the decay reactions are first order reactions Hence we can say  1) Half life = ln(2) / K 2)…

Q: You just started a new job and a fellow researcher found a fossil that they believed to be 20,000…

A: Given: Half-life of the new isotope = 2000 years. And the actual age = 4000 years.

Q: Nearly all of the protons and neutrons in the seven-to-one ratio at t = 225 s either formed 4He or…

A: The relative abundance of a species with respect to another provides information about the percent…

Q: The isotope 83212Bi has a half-life of 1.01 years. What mass (in mg) of a 2.00-mg sample will not…

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Q: 1) According to your data, what are the approximate half-lives of the elements A, B, C, and D? A: B:…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Strontium-90 is radioactive and has a half life of 28.8 years. How much of a 9.70 mg sample would be…

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Q: Krypton consists of several radioactive isotopes, some of which are listed in the following table.…

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Q: (a) If exactly 1.00 μg of 226Ra was used to paint the glow-in-the-dark dial of a wristwatch made in…

A: Given, mass of R226a= 1.00 μg time span , t =(1955-1914)=41 yr t1/2=1.6×103 yr

Q: Iodine-131 is radioactive and has a half life of 8.04 days. How much of a 8.90mg sample would be…

A: Half life tells you about the intervals when your initial sample will get halved.

Q: What is the product forms from the decay equation below? * 14 C --> 0,e + 145B 14 b. 14C 2He d. а.…

A: According to question answer must be 147N. So, whatever solution solution is provided by us is it…

Q: 214Bi is a radioactive isotope of the element bismuth with a half-life of 19.7 minutes. What…

A: Welcome to bartleby !  Introduction :  We have to calculate percentage of bismuth lost . Given :…

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. What percentage of a sample would be…

A: Half-Life =12.3 years Time =13.0 years

Q: Initial Amount After Half-life (years) Isotope Оuantity 1000 Years 33. 226RA 1599 10 g 94. e 5715…

A: in radioactivity is defined as unstable nuclei is decay into stable nuclei and emits electromagnetic…

Q: How old is a skeleton that has lost 40% of its carbon-l4? Use 5,73A years as the half life of…

A: NOTE : There is a typing error in the half life of C-14 It will be 5730 year

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. How long would it take a sample to decay…

A: We have to calculate the time taken.

Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-lfe of…

A: Given: The half-life of chromium-51 is 27.7 days The amount of the isotope is 34.3 mg The time (t)…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 3.60 mg to 2.50 mg…

A: Given  Initial amount ( A0 )   = 3.60 mg  Remaining amount ( At ) = 2.50 mg  Time ( t ) = 51.2…

Q: Plutonium-238

A: We wil use first order kinetics formula to get the answer

Q: -137, a beta emitter has a half-life of 30 vears

A: Dear student I have given answer to your question in the image format.

Q: The nuclide 0 (atomic mass, 17.99916 u) is produced by the B* decay of F (atomic mass 18.00094 u).…

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Q: Which isotope in the list below is most likely to be used for medical purposes? O 222Rn, t/2= 3.8…

A: In the given isotopes there are almost all have there uses in their respective field. But one of…

Q: Iodine-125 has a half-life of 60.4 days and is used in radiation therapy to treat prostate cancer…

A: Since Iodine will decay as it is radioactive. And since decay reactions are first order reactions…

Q: If the half-life of a radioactive element is 219.3 years and the atomic weight of the radioactive…

A: The number of decay in 1 second for 1 gram sample of a radioactive element is known as Specific…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32P, how many grams will remain…

A: Given Initial amount (N०) = 8.00 g Half life (t1/2) = 14 days time (t) = 42 days

Q: A sample of a radioactive substance has an initial mass of 563.6 mg. This substance follows a…

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Q: bromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to…

A: Given , Bromine -88 t1/2= 16.3 s initial mass of sample ,Ca0=5.60 mg=5.6×10-3g final mass of sample,…

Q: Phosphorus- 32 is radioactive and has a half life of 14.3 days. How much of a 2.70mg sample…

A: The rate constant for the reaction, k, is calculated as shown below where t1/2 is the half-life for…

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 48.9 g of "P, how…

A:

Q: Redium (chemical symbol Rd) and blueium (chemical symbol BI) are newly discovered elements with…

A: Beta Decay is a type of radioactive decay in which a neutron is transformed into a proton inside the…

Q: Iodine-131 is radioactive and has a half life of 8.04 days. How long would it take a sample to decay…

A: The question is based on the concept of chemical kinetics. We have to calculate time taken for…

Q: The hat life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x10^10 years. Suppose…

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Q: How long does it take a 30.0 mCimCi sample of gold-198 to decay so that only 7.50 mCimCi remains?

A: Given datas ;  [A0] = 30.0 mCi  [At] = 7.50 mCi  t = ?  Since, we know that ; The half life of…

Q: 218 Po→218 At +X 84 1K-Ar +Xn→_{ß+X 210 Bi→206 T1+X 83 81 ip

A: The emissions of the most common forms of spontaneous radioactive decay are the Alpha particle,the…

Q: Be sure to answer all parts. A 0.0110-g sample of a radioactive isotope with a half-life of 1.3 x…

A: The molar mass of the isotope can be calculated as follows

Q: Calculate the number of protons, neutrons and electrons in 211 Rn 86

A: Since the symbol given is 21186Rn hence the Atomic number = 86 = number written in bottom of symbol…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 g of 32P, how many grams will remain…

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.