a 16.0 g sample of radioactive oxygen-11 has a half life of 3.0 minutes. How much will be lett after 9.0 minutes? Select one: О а. 4.00 g O b. 2.00 g О с. 16.0 g O d. none will be left after that period of time O e. 8.00 g

Q: If 1 g of an isotope has a half life of 15 hr, the half life of 0.5 g sample is A. 15 hr B. 30 hr C.…

A: 1 g sample of an isotope has a half - life = 15 hr 0.5 g sample of an isotope has a half - life =?…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 4.60 mg to 1.90 mg…

A:

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: A particular isòtope of an element has a half-life of 75.0 hours. What percentage of the sample will…

A: All isotopic decomposition follows the first order reaction kinetics. So using integrated rate…

Q: Moonrock collected by a US Apollo mission is estimated to be 4.30 billion years old by uranium/ lead…

A:

Q: 18. Americium - 241 has a half life of 432 years. If you have 25g of Americium - 241, how much will…

A: Given : Half life (T) = 432 years Mass (No) = 25 grams  Time (t) = 864 years Mass left after 864…

Q: 4. Radon-222 has a half-life of 2.8 days. How many half-lives will pass after 28 daysa O 19 O 5 O 10…

A: Given that: half life of Rn = 2.8 days To find: How many half life will pass after 28 days?

Q: A 54.5 mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0…

A:

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Given  Half life of cesium - 129 =  32 hours  Remaining activity [ A ] = 14.5 %  Time ( t ) = ?

Q: Strontium 90 (half-life 5 29 y) is one of the worst components of fullout from atmospheric testing…

A:

Q: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

Q: 8. What mass of plutonium-240 will remain after 32,820 years if the initial sample contained 4.8 g…

A: No. of half lives = Total time/ half- lives n = 32820/6564 = 5 n = 5

Q: 9. Radon-222 has a half-life of 2.8 days. How many half-lives will pass after 28 days? O 19 10 15 05

A:

Q: If you have a sample of radioactive material that weighs 2 grams, and only 1 gram is left that is…

A: Initial nuclei = 2 grams. Reduced nuclei = 1 grams. Time = 5 years. Half life time of material = ?

Q: Ca-60 is used extensively in radiotherapy and its half-life is 5.27 years. How many years will it…

A: Given: half life, t12=5.27 years[A]=0.2[A]o To calculate: Years taken to decrease to 20% of its…

Q: Question 9 188pb has a half-life of 25.5 s. If a sample of this isotope is initially 750.0 g. what…

A: 9) Given, Half life of 188Pb = 25.5 s Initially amount of isotope = (188Pb)o = 750.0 g mass (in…

Q: You are studying a sample of granite that is about 2.1 billion years old. You know it contains some…

A: Here granite containing uranium -235 is formed 2.1 billion years old. We have to determine the…

Q: this response. Question 17 of 20 Quèstion 17 6 poirits Seve Arower A sample of 2°1 has a half life…

A:

Q: PET scans require fluorine-18, which is produced in a cyclotron and decays with a half-life of 1.83…

A: Given: Half life, T1/2 = 1.83 hrVelocity of transport, v= 60.0 miles/hrfinal Concentration of F-18 =…

Q: None

A:

Q: The half life of a radioactive iodine is 8 days. How long will it take for 0.25 g of radioactive…

A:

Q: All of the following statements are true EXCEPT || A. gamma emission can accompany nuclear decay,…

A: Hi, since you have posted multiple questions we will answer the very first question for you. Kindly…

Q: The half life of carbon-14 is approximately 5568 years. If we have 250 grams carbon-14 today,…

A: Given,Half life of carbon-14 = 5568 yearsToday's amount of carbon-14 = 250 gramsTime = 100…

Q: lodine-131 has a half-life of 8.1 days. How much of 2 g of the isotope will remain after 56.7 days?…

A: The nuclear half-life of a radioactive isotope tells you how much time must pass in order for half…

Q: A certain isotope has a half-life of 2.00 days. How much of a 4.00g sample of this isotope will…

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

Q: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: The isotope 208^TI undergoes beta decay with the half-life of 3.1 minutes calculate the amount…

A: Half life = t1/2 = 3.1 minTo determine rate constantk t1/2  = ln (2)k =0.6933.1 min=0.22 min-1

Q: PLAY STOP 4 Carbon-14 has a half life of 5730 years. How much carbon-14 would remain after 34380…

A: Given-> Half life = 5730 year  Time = 34380 year Initial amount = 54.0 gm

Q: 1. Radon-222 has a half-life of 3.8 days. How many half-lives will pass after 38 days? O15 19 5 10

A:

Q: A 1.00 g sample of Ge decays to 0.87 g in 1.9 hr. What is the half-life of Ge ? 32 a. 0.073 hr b.…

A: Decay reactions are first order reactions. Given : Initial mass of reactant = 1.00 g Final mass of…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A:

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: You are using a Geiger counter to measure the activity of a radioactive substance over the course of…

A: Dear student ,   since you have posted multiple parts questions we are allowed to solve only first…

Q: After 31 years, what mass (in g) remains of a 45.0 g sample of a radioactive isotope with a…

A: Given, Half life (t1/2 )= 7.3 years time (t) = 31 years Number of radioactive atoms present…

Q: You have a fresh sample of 1000 grams of indium-131 isotope which has a half-life of 8.05 days. How…

A: According to the question, Given initial mass  of indium-131 isotope = 1000 g   The  Half life (t12)…

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

A: Given that - Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

Q: 1. What are the numbers of protons, electrons and neutrons in 232Th? 2. The half-life of Cobalt- 60…

A:

Q: The initial amount of the radioactive material V in a rock is determined t be 6.78 mg. Only 1.46 mg…

A: When we study the kinetics of any chemical reaction that means how slow or fast reaction is, then…

Q: Seaborgium-266 is a radioactive metal that does not occur naturally and only a few atoms have ever…

A: Answer:- This question is answered by using the simple concept of calculation of number of protons…

Q: lodine-131 has a half-life of 8. l days. How much of 2 g of the isotope will remain after 56.7 days?…

A: Half-life of iodine = t1/2 =  8.1 days intial amount = A0 = 2 g  final amount = A =  ? g  Time given…

Q: A radioactive of an unknown element is an extremely hazardous species. If a 79 gram sample of the…

A: Given: Initial amount, a=79 g The final amount, a-x=37 Time =37.9 yr Rate constant=? half-life =?

Q: Carbon-14 is used for archaeological carbon dating. Its half-life is 5,730 years. How many grams of…

A:

Q: A particular isotope of an element has a half-life of 56 days. What percentage of the sample will…

A:

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…

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.