Question

In: Physics

A sample contains 30MBq of 201Pb (half-life time:22years) and 15MBq of 210Bi (half-life time : 5...

A sample contains 30MBq of 201Pb (half-life time:22years) and 15MBq of 210Bi (half-life time : 5 days) at time t=0.
1) calculate the activity of 210Bi at time t=10days
2) if the sample originally pure 201Pb, then how old is it at a time t=0

Solutions

Expert Solution


Related Solutions

Polonium-218 is an alpha emitter with a half-life of 3.0 minutes. **)If a sample contains 55...
Polonium-218 is an alpha emitter with a half-life of 3.0 minutes. **)If a sample contains 55 mg of Po−218 (atomic mass = 218.008965 amu), how many alpha emissions would occur in 27.0 minutes? **)If the polonium were ingested by a person, to what dose of radiation (in Ci) would the person be exposed? (I need correct answer for this please)
The half-life of a radioactive isotope represents the average time it would take half of a...
The half-life of a radioactive isotope represents the average time it would take half of a collection of this type of nucleus to decay. For example, you start with a sample of 1000 Oxygen-15 (15O) nuclei, which has a half-life of 122 seconds. After 122 seconds, half of the 15O nuclei will have decayed into Nitrogen-15 (15N) nuclei. After another 122s, half of the remaining Oxygen nuclei will have also decayed, and so on. Suppose you start with 3.71×10315O nuclei...
The half-life of a reaction, t1/2, is the time required for one-half of a reactant to...
The half-life of a reaction, t1/2, is the time required for one-half of a reactant to be consumed. It is the time during which the amount of reactant or its concentration decreases to one-half of its initial value.Determine the half-life for the reaction in Part B using the integrated rate law, given that the initial concentration is 1.95 mol⋅L−1 and the rate constant is 0.0019 mol⋅L−1⋅s−1
different between shelf half life and half life
different between shelf half life and half life
Q.5. From a sample of 100 tires the mean life time was 46000 miles with a...
Q.5. From a sample of 100 tires the mean life time was 46000 miles with a standard deviation of 5500 miles. Test the hypothesis μ = 45000 against the alternate μ > 45000 at (i) 0.05 and (ii) 0.01 level of significance. ? solve the above problem step by step in proper format
1.A radioactive sample has a half-life of 2.5 min. What fraction of the sample is left...
1.A radioactive sample has a half-life of 2.5 min. What fraction of the sample is left after 40 min? 2. The energy of a 2.00 keV electron is known to within
The half-life of a certain radioactive isotope is 3.24 years. If a sample consisting of 6.023x1023...
The half-life of a certain radioactive isotope is 3.24 years. If a sample consisting of 6.023x1023 atoms were allowed to decay, what percentage of the original number of atoms have decayed after 2.0 years? A) 50 B) 46 C) 32 D) 54 E) 60
the half-life of a radioisotope 63 hours how much time will elapse if the radioisotope decays...
the half-life of a radioisotope 63 hours how much time will elapse if the radioisotope decays to one-fourth of its original mass?
The half- life of bromine-74 is 25 min. how much of a 6.8mg sample is still...
The half- life of bromine-74 is 25 min. how much of a 6.8mg sample is still active after 75 min?
The half-life of 99mTc is 6 hours. After how much time will 1/16th of the radioisotope...
The half-life of 99mTc is 6 hours. After how much time will 1/16th of the radioisotope remain?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT