Purchase Solution

Nuclear Chemistry : Radioactive Decay

Not what you're looking for?

Ask Custom Question

Question 1
A radioisotope decays to give an alpha particle and Pb-208. What was the original element?

Se
Bi
Po
Hg
Rn

--------------------------------------------------------------------------------

Question 2
Sulfur-35 decays by beta emission. The decay product is ________.

P
S
Si
35-Cl
37- Cl

--------------------------------------------------------------------------------

Question 3
Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. What fraction of the initial number of C-11 atoms in a sample will remain after 81 minutes?

1/16
1/4
1/2
1/32
1/8

--------------------------------------------------------------------------------

Question 4
Po-208 is an alpha emitter with a half-life of 2.90 years. How many mg of polonium from an original sample of 2.0 mg will remain after 8.0 years?

0.147 mg
0.295 mg
0.725 mg
6.77 mg
1.90 mg

--------------------------------------------------------------------------------

Question 5
Charcoal found under a stone at Stonehenge, England, has a carbon-14 activity that is 0.60 that of new wood. How old is the charcoal? The half-life of carbon-14 is 5,730 years.

Less than 5,730 years
Between 5,730 and 11,460 years
Between 11,460 and 17,190 years
More than 17,190 years

--------------------------------------------------------------------------------

Question 6
What role does cadmium metal (Cd) play in a nuclear reactor?

slows down the fission neutrons (moderator)
transfers heat from the reactor to the heat exchanger (primary coolant)
controls chain reaction (control rods)
transfers heat from the condenser to the environment (cooling tower)
undergoes fission (fuel rods)

--------------------------------------------------------------------------------

Question 7
Which one of the following is the most penetrating of the three types of nuclear radiation?

alpha
beta
gamma

--------------------------------------------------------------------------------

Question 8
Gamma-rays and X-rays cause radiation damage when they interact with matter by producing ________.

ions and free radicals
isotopes
daughter products
oxidation
reduction

--------------------------------------------------------------------------------

Question 9
How many neutrons and protons (nucleons) does an atom with the symbol S have?

33
16
49
17
None of the above.

--------------------------------------------------------------------------------

Question 10
Predict the other product of the following nuclear transformation.

Li + n _____ + He

He
H
H
β
H

Purchase this Solution

Solution Summary

Nuclear chemistry and radioactive decay problems are solved. The solution is detailed and well presented.

Purchase this Solution


Free BrainMass Quizzes
The Moon

Test your knowledge of moon phases and movement.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Basic Physics

This quiz will test your knowledge about basic Physics.