The half-life of bismuth-212 is 1 hour. If 12g of bismuth are allowed to decay, what mass of bismuth 212 is left aftor 3 hours? A) 26.5g B) 53g C) 3 D) 1%9

Q: atom 16. Phosphorus- 32 has a half-life of 14.3 days and is used in the treatment of 32/16 leukemia,…

A: Beta particle decay:                               A Beta particle is a high energy electron that…

Q: 2. A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of…

A: When the quantity is reduced to one-half of the original of a radioactive sample, then the time…

Q: The half-life of bismuth-210, 210Bi, is 5 days. (a) If a sample has a mass of 216 mg, find the…

A: The decay of radioactive elements follows first order kinetics. So we would use first order reaction…

Q: A radioactive sample contains 3.01×1018 atoms of a nuclide that decays at a rate of 3.28×1013…

A: The radioactive decay follows first-order reactions. Therefore, N = N0 e -λt

Q: A 6.00g sample of Iodine-131 decays until there is only 0.75g of Iodine-131 remaining. How much time…

A: Given data:

Q: Technetium-99m has a half-life of 6.01 hours. If a patient injected with technetium-99m is safe to…

A: Half-life: The half-life of a chemical reaction is time needed for half of an initial concentration…

Q: How much time in years (assume a 365 day year for each year) would it take for a 1.805 g sample of…

A:

Q: 32p has a half-life of 14.3 days. The original sample of 32P has a mass of 1.88 g. Approximately…

A: Answer: 0.0294 g

Q: A sample of polonium-210 has a half-life of 138 days a)What fraction of polonium-210 remains after…

A:

Q: The half-life of 238U is 4.5 * 109 yr. A sample of rock of mass 1.6 gproduces 29 dis>s. Assuming…

A: The given data contains, mass = 1.6 g. half life=4.5×109 year.

Q: The half-life of Oxygen-14 is 1.177 minutes.  You originally have 20 grams of it.  After roughly 3.5…

A: Given: Half-life of Oxygen-14 is 1.177 minutes Mass of Oxygen-14 is 20 g

Q: How much time in minutes would it take for a 2.301 g sample of 3H to decay to a mass of 1.789 g if…

A: The initial concentration (N0), final concentration (N), and time (t) required to convert the…

Q: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. If a sample initially contains…

A: Given, half life of Pu -236, t1/2 = 2.86 years            initial mass of Pu -236= 2.35 mg The…

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by…

A: Since this is a first order decay The rate constant with half life is given by…

Q: A piece of a spear handle is found in an archaeological dig in Central America. It contains 12.5% as…

A:

Q: You have a sample 100.0 g sample of lodine-135. a) Determine the half-life of a radionuclide if…

A:

Q: 1.) A researcher claims that an ancient scroll originated from Greek scholars in about 500 B.C. Its…

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

Q: A 4.0 g sample of Ra-226 decays to 1.0 g. If the half-life of Ra-226 is 1620 years, how much time…

A: Given initial concentration of Ra-226 = [Ra-226]0 = 4.0 g  Final concentration = [Ra-226] = 1.0 g…

Q: The isotope shown has a mass of 14.003241 amu. Calculate how much energy is released from the…

A:

Q: In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.  Given…

A: Here we are required to find the amount of Francium 221 remain after 7.32 minutes.

Q: The initial amount of thorium-232 in a rock is determined to be 6.78mg. it now has 5.32 mg of…

A:

Q: A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of the…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by…

A: Calculate the value of rate constant (k):

Q: 4. The mass of chlorine-37 is 36.96590 amu. Calculate the binding energy per nucleon of chlorine-37.

A: Interpretation - The binding energy per nucleon of chlorine-37 is to be explained.

Q: if 8.000 grams of U-234 are sealed in a container and then opened many years later -- how much time…

A:

Q: After 60 days, 10 grams of radioactive isotope remains from an original 80 g sample. What is the…

A: Law of radioactive decay: Law of radioactive decay relates the amount radioactive substance…

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 isotope shown has a mass of 14.003241 amu. Calculate how much energy is released from the…

A: Given, The mass of an isotope =14.003241 amu To calculate how much of the energy is released from…

Q: If the initial sample is 2.50 g, what mass of the original iridium-192 remains after 5 days? 1.5…

A:

Q: A moon rock collected by a U.S. Apollo mission is estimated to be 3.50 billion years old by…

A: Given : Time = 3.50 billion years old. Mass of uranium-238 = 1.540g Half life = 4.47 x 109 years

Q: If the initial sample is 8.00 g, what mass of the original iridium-192 remains after 105 days? 0.675…

A:

Q: Enter your answer in the provided box. A rock sample originally contains 3.21 mg of 238U. How much…

A:

Q: 15. What percent of iodine is left if 5 half-lives have passed? 16. What percent of iodine-125 has…

A: We are given data in the table of decay of isotope 125 and we have to tell about the half life and…

Q: Rubidium-87 decays by β production to strontium-87 with a half-life of 4.7 × 1010 years. What is the…

A: Since the Sr is forming by the decay of Rb  Ans since 1 mole of Rb will decay to form 1 mole of Sr…

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: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.2 g remain. What is the original…

A:

Q: A radioactive sample contains 3.81 × 108 atoms of a nuclide that decays at a rate of 3.75 × 1013…

A: Activity depends on no.of particles of disintegrating nuclei and is expressed as, All radioactive…

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A: Given, N = 3.8 microgram No = 104.9 microgram t1/2 = 4.7 × 1010 year.

Q: The radioactive nuclide ⁶⁰₂₇ Co has a half-life of 5.27 years. Calculate the mass of ⁶⁰₂₇Co that…

A: Given,

Q: 12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much was…

A:

Q: 3.7. The radioactive nuclide Co has a half-life of 5.27 years. Calculate the mass of Co that remains…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: Which of the following describe(s) the following reaction? Choose all that apply. 23U + on ORb + 144…

A:

Q: 32p has a half-life of 14.3 days. The original sample of 32P has a mass of,1.88 g. Approximately…

A: Half life of an element can be defined as the time period during which concentration of a species…

Q: The 175Pt isotope has a half-life of 2.53 seconds. What percentage of the original quantity of 175Pt…

A: The radio active decay follows first order kinetics. The half life t1/2 and rate constant K of a…

Q: Next step of the neptunium-237 decay series, very unstable francium-221 is produced. The half-life…

A: Given: Half-life of  francium-221 = 5.00 minutes Initial mass of francium-221 = 6.12 grams Time…

Q: How many alpha particles are emitted per minute by a 0.0010-g sample of 238U that has been freshly…

A: Given, Mass of sample = .001 g Half life of uranium = 4.47 x 109 years = 4.47 x 109 x 3.156 x 107…

Q: The radioactive isotope Cr decays by beta emission. 56 24 If the mass of a sample of chromium-56…

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