Suppose the amount of a certain radioactive substance in a sample decays from 3.60 mg to 2.50 mg over a period of 51.2 seconds. Calculate the haif life of the substance Round your answer to 2 significant digits

Q: Skeletal remains had lost 85%of the C-14 they originally contained. Determine the approximate age…

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Q: A radioactive sample contains 1.55 g of an isotope with a halflife of 3.8 days. What mass of the…

A: Given details, t1/2 = 3.8 days t = 5.5 days m0 = 1.55 g To calculate the mass of the isotope. By…

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: 3. Cobalt-60 has a half-life of 5.26 years. If 1.00 g of 6°CO were allowed to decay, how many grams…

A: 3) Given that: Half life of cobalt = 5.26 years Mass of cobalt = 1.0 g

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A: Given Half Life = t1/2 = 2.23 minutes  By using Formula kt1/2 = ln 2k * 2.23 minutes = 0.693k = 0.31…

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A: Answer:

Q: A theoretical isotope X-100 has an initial mass of 500g. This isotope has a half-life of 8 hours.…

A: GivInitial mass=500g Half life=8 hours

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: Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 7.20 mg sample would be…

A: The solution is as follows :

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: The Sun radiates energy into space at the rate of 3.9 * 1026 J/s. (a) Calculate the rate of mass…

A: Given:  The value corresponding to energy radiated per second is 3.9×1026 J/s.

Q: Phosphorus-32 is radioactive and has a half life of 14.3 days. How long would it take a sample to…

A: Ans

Q: Look at the figure below. In the mineral specimen represented here, radioactive parent atoms (red)…

A: HALF- LIFE PERIOD: In radioactivity, half- life period is defined as the time period required for a…

Q: (Simplify your answers. Do not round until the final answers. Then round to four decimal places as…

A: All radioactive decays are first order reaction. The half-life of first order reaction is given by,…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.70 mg to 700. µg…

A:

Q: Suppose the amount of a certain radioactive substance in a sample decays from 9.40mg to 5.40mg over…

A: Radioactive decay is the first order decay. the formula for calculation of radioactive decay as…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 1.60 mg to 900. µg…

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Q: Elemet x decays radioactivity with a half life of 14 minutes . if there are 920 grams of elment x ,…

A: A numerical problem based on the concept of half-life period which is to be accomplished.

Q: Suppose the amount of a certain radioactive substance in a sample decays from 7.10 mg to 5.20 mg…

A: Radioactive decays are first order reactions. Since we know that the relationship between the amount…

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: 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: Q3.Give two example each for the transmutation reaction produced by protons,deutron,neutron,…

A: Transmutation reaction: Nuclear transmutation is a conversion of one chemical element or an isotope…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.50 mg to 2.40 mg…

A: Radioactive decay is a first-order reaction. On applying the value for rate constant k, we find it…

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: 2) The half-life of Carbon-14 is 5730 years. i) Find the valuer so that A(t) = A0e-rt gives the…

A:

Q: 48. If the decrease between 18 and 24 years in mass of radioactive matter is 4g, find its initial…

A: Radioactive decay follows first order kinetics.  We know that : k = 0.693/t(0.5) ...(1) k = rate…

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: This exercise uses the radioactive decay model. A wooden artifact from an ancient tomb contains 80%…

A: The wooden artifact has 80% of the carbon-14 that is present in a living tree. The age of the…

Q: lodine-131, a radioactive substance that is effective in locating brain tumors, has a half-life of…

A:

Q: Cobalt-60 is radioactive and has a half life of 5.26 years. What percentage of a sample would be…

A: For the reaction - A   +     B      →      C     +      D Rate = KAnBm where n and m are order of A…

Q: a 16.0 g sample of radioactive oxygen-11 has a half life of 3.0 minutes. How much will be lett after…

A: The time is needed for the concentration of reactant to decrease the half compared to the initial…

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 77.1 g of ³2P, how…

A:

Q: Technetium-99 (half-life = 6.01 h) is used in medical imaging. How many half-lives would go by in…

A: Given that technetium - 99 have a half life of 6.01 hours

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

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: 9436Kr

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

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…

A:

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: Intercomver ting Jodine-125 is radioactive and has a half life of 60.25 days. How much of a 5.60 mg…

A:

Q: A skull believed to belong to an ancient human being has a carbon-14 decay rate of 6.50 dis/min.g of…

A: The half life for a radioactive element can be defined as the time taken by the half of the material…

Q: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per…

A: Record the given data, Initial Carbon-14, No = 13.6 CPM per gram Nt = 6.00 CMP per gram Half-life t…

Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00g of P, how many grams will remain…

A:

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…

A:

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. What percentage of a sample would be…

A:

Q: Define the term half-life and illustrate it with an example.

A: The rate of the reaction is referred to the change in the molar concentration in the distinct…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A: 1) calculate what decimal fraction of C-14 will be remaining: 11 / 15.2 = 0.72 2) calculate…

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…

Q: The remains of Oetzi the Iceman were discovered near the border of Austria and Italy in 1991.…

A: A decay process of a nucleus occurs via first-order kinetic. The rate constant for the carbon-14…