The half-life of 235U, an alpha emitter, is 7.1×108 yr. Calculate the number of alpha particles...

The half-life of 235U, an alpha emitter, is 7.1×108 yr. Calculate the number of alpha particles emitted by 8.2 mg of this nuclide in 8.0 minute.

Expert Solution

queen_honey_blossom answered 2 years ago

The half-life of 235U, an alpha emitter, is 7.1×108 yr,Calculate the number of alpha particles emitted...

The half-life of 235U, an alpha emitter, is 7.1×108 yr,Calculate the number of alpha particles emitted by 4.1 mg of this nuclide in 2 minutes

The half-life of 235U, an alpha emitter, is 7.1×108 yr. Part A Calculate the number of...

The half-life of 235U, an alpha emitter, is 7.1×108 yr. Part A Calculate the number of alpha particles emitted by 4.4 mg of this nuclide in 2 minutes. Express your answer using two significant figures.

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)

Suppose a patient is given 140 mg of I−131, a beta emitter with a half-life of...

Suppose a patient is given 140 mg of I−131, a beta emitter with a half-life of 8.0 days.Assuming that none of the I−131 is eliminated from the person's body in the first 4.0 hours of treatment, what is the exposure (in Ci) during those first four hours? (please I need the correct answer with steps *no predictions )

Rubidium-strontium dating. The rubidium isotope 8737Rb, a β emitter with a half-life of 4.75×1010yr, is used...

Rubidium-strontium dating. The rubidium isotope 8737Rb, a β emitter with a half-life of 4.75×1010yr, is used to determine the age of rocks and fossils. Rocks containing fossils of ancient animals contain a ratio of 8738Sr to 8737Rb of 0.0310. Assuming that there was no 8738Sr3887Sr present when the rocks were formed, estimate the age of these fossils.

Strontium 38Sr90 has a half-life of 29.1 yr. It is chemically similar to calcium, enters the...

Strontium 38Sr90 has a half-life of 29.1 yr. It is chemically similar to calcium, enters the body through the food chain, and collects in the bones. Consequently, 38Sr90 is a particularly serious health hazard. How long (in years) will it take for 99.9488% of the 38Sr90 released in a nuclear reactor accident to disappear?

Neutron Decay 4 On their own, neutrons are unstable particles with a half-life of 618 s...

Neutron Decay 4 On their own, neutrons are unstable particles with a half-life of 618 s when at rest. They decay into a proton, an electron and an electron antineutrino. Half-life is the time that it takes half of a collection of unstable particles to decay. a- The highest energy neutrons produced in a nuclear reactor are traveling at about %15 of the speed of light, About how many seconds is longer in this half - life for these neutrons?...

The half-life for the alpha decay of 232U to form 228Th is 68.9 y. Suppose the...

The half-life for the alpha decay of 232U to form 228Th is 68.9 y. Suppose the energy of the alpha particle is 5.28 MeV and that 1.09 g of 232U, freed of any other radioactive materials, were placed in a calorimeter containing 49.1 g of water, initially at 22.9°C. Calculate the temperature the water would reach after 1.15 hour. Neglect the heat capacity of the calorimeter and heat loss to the surroundings. Take the specific heat of water to be...

Exposure over a number of weeks to 20 MeV alpha particles will make a material radioactive....

Exposure over a number of weeks to 20 MeV alpha particles will make a material radioactive. True or False?

Alpha particles of a certain initial kinetic energy are projected at nuclei with atomic number Z...

Alpha particles of a certain initial kinetic energy are projected at nuclei with atomic number Z = 60. The closest distance of approach of the alpha particles to the nucleus is 100 fm (fm = femtometer = 10-15 m). If alpha particles of the same initial kinetic energy are projected at nuclei with atomic number 88, what is the distance of closest approach? Give your answer in fm. (Enter the number only -- do not include the units in your...

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