Question

In: Chemistry

Consider 100 g of 252Fm, which decays in a sequence of 5 α decays to eventually...

Consider 100 g of 252Fm, which decays in a sequence of 5 α decays to eventually reach 232Th. The relevant half-lives follow:

252 Fm :25.39 hr

248 Cf :333.5 d

244 Cm : 18.10 yr

240Pu : 6564yr

236 U :2.34 × 10^7 yr

232 Th :1.41 × 10^10 yr

For the following questions, state clearly any approximations that you need to make. a) How much of the original sample is 252Fm and how much is 248Cf after one day? b) After one month? c) Explain why it is mostly curium after 5 years. d) What isotope is it mostly after 100 years? e) Approximately how long it will take the sample to be mostly thorium?

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago
Next > < Previous

Related Solutions

An atom of Po216Po216 decays by ?α emission. If the emitted ?α particle carries away 100%...
An atom of Po216Po216 decays by ?α emission. If the emitted ?α particle carries away 100% of the released energy as kinetic energy, how fast is it moving? The masses of an electron, an alpha particle, and several neutral isotopes are given in terms of atomic mass units in the table. Particle Mass (u) ?−e− 5.4858×10−45.4858×10−4 ?α 4.0015061791254.001506179125 Tl207Tl207 206.977419429206.977419429 Tl208Tl208 207.9820187207.9820187 Tl209Tl209 208.985358952208.985358952 Pb211Pb211 210.988736964210.988736964 Pb212Pb212 211.991897543211.991897543 Bi211Bi211 210.98726946210.98726946 Bi212Bi212 211.991285724211.991285724 Bi213Bi213 212.994384666212.994384666 Bi214Bi214 213.998711539213.998711539 Bi215Bi215 215.001769776215.001769776 Po215Po215 214.999419988214.999419988...
Beryllium-8 is an unstable isotope and decays into two α particles, which are helium nuclei with...
Beryllium-8 is an unstable isotope and decays into two α particles, which are helium nuclei with mass 6.68×10−27kg. This decay process releases 1.5×10−14J of energy. For this problem, let's assume that the mass of the Beryllium-8 nucleus is just twice the mass of an α particle and that all the energy released in the decay becomes kinetic energy of the α particles. If a Beryllium-8 nucleus is at rest when it decays, what is the speed of the  α particles after...
Beryllium-8 is an unstable isotope and decays into two α particles, which are helium nuclei with...
Beryllium-8 is an unstable isotope and decays into two α particles, which are helium nuclei with mass 6.68×10−27kg. This decay process releases 1.5×10−14J of energy. For this problem, let's assume that the mass of the Beryllium-8 nucleus is just twice the mass of an α particle and that all the energy released in the decay becomes kinetic energy of the α particles. a) If a Beryllium-8 nucleus is at rest when it decays, what is the speed of the  α particles...
Consider the following reaction which is at equilibrium at 100°C: A(g) + B(g) ↔ AB (g)...
Consider the following reaction which is at equilibrium at 100°C: A(g) + B(g) ↔ AB (g) ΔH=420 kJ/mol Predict the direction where the reaction would proceed, and explain your reasoning: a. The reaction vessel were pressurized to 5atm with helium b. The temperature were increased to 200°C c. The reaction were coupled with another reaction: AB + D2 → AD + BD d. The volume of the reaction vessel were increased from 2.0L to 5.0L without removing any gas e....
(a) a sequence {an} that is not monotone (nor eventually monotone) but diverges to ∞ (b)...
(a) a sequence {an} that is not monotone (nor eventually monotone) but diverges to ∞ (b) a divergent sequence {an} such that {an/33} converges (c) two divergent sequences {an} and {bn} such that {an + bn} converges to 17 (d) two convergent sequences {an} and {bn} such that {an/bn} diverges (e) a sequence with no convergent subsequence (f) a Cauchy sequence with an unbounded subsequence
Consider the production series of radioactive sample A decays to sample B then decays to stable...
Consider the production series of radioactive sample A decays to sample B then decays to stable sample C. Na(0)=N0; Nb(0)=N0/4. lambda A and lambda B is equal to lambda. Derive the activity of sample B as a function of time (t), and the time at which Nb is maximum. Show all of the steps in your work and how you get the answers.
Consider 100 g of aluminum (p = 2700 kg/m^3) and 100 g of lead (p =...
Consider 100 g of aluminum (p = 2700 kg/m^3) and 100 g of lead (p = 11,300 kg/m^3). a. Which as a greater volume? Show why this is true mathematically. b. Which contains a larger number of moles? Show why this is true mathematically. c. Which contains more atoms? Show why this is true mathematically. A 685-liter oxygen tank contains oxygen gas at 20℃ . When the tank is full, the pressure gauge reads 3000 psi. a. How many oxygen...
Question: Consider the following C language instruction. A[10] = ((f+g) – (h+A[5])) + 100; Translate the...
Question: Consider the following C language instruction. A[10] = ((f+g) – (h+A[5])) + 100; Translate the above code into MIPS assembly language code. Assume variables f, g, and h are associated with registers $S0, $S1, and $S2 respectively. The base address of A is associated with register $S5.
. Suppose that the sequence (xn) satisfies |xn –α| ≤ c | xn-1- α|2 for all...
. Suppose that the sequence (xn) satisfies |xn –α| ≤ c | xn-1- α|2 for all n. Show by induction that c | xn- α| ≤ c | x0 - α|2n , and give some condition That is sufficient for the convergence of (xn) to α. Use part a) to estimate the number of iterations needed to reach accuracy |xn –α| < 10-12 in case c = 10 and |x0 –α |= 0.09.
Consider a three-base sequence within the coding region in the DNA template strand: 5'-...123...-3', in which...
Consider a three-base sequence within the coding region in the DNA template strand: 5'-...123...-3', in which 1, 2, and 3 refer to the relative positions of deoxyribonucleotides within a codon. What would be the effects of a point mutation that would change a purine for a pyrimidine at position 2? 1. (True/False) This mutation will always result in an altered amino acid sequence in the mutant protein compared to the original protein. 2. (True/False) The mutant amino acid, if changed,...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT