Sections | |||
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Radioactive Decay | 42 mins | 0 completed | Learn |

Band of Stability | 22 mins | 0 completed | Learn |

Magic Numbers | 10 mins | 0 completed | Learn |

First Order Half Life | 19 mins | 0 completed | Learn |

Additional Practice |
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Alpha Decay |

Beta Decay |

Gamma Emission |

Electron Capture |

Positron Emission |

Nuclear Fission |

Mass Defect |

Nuclear Fusion |

Nuclear Transmutation |

Solution: The half-life of nickel-63 is 85 years. How old is a painting with an activity that is 3.5% of the steady-state rate for Ni-63?
a. 0.027 yr
b. 3.0 yr
c. 410 yr
d. 2400 yr

The half-life of nickel-63 is 85 years. How old is a painting with an activity that is 3.5% of the steady-state rate for Ni-63?

a. 0.027 yr

b. 3.0 yr

c. 410 yr

d. 2400 yr

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Radon-220 undergoes alpha decay with a half-life o...

Radon-220 undergoes alpha decay with a half-life o...

Radon-220 undergoes alpha decay with a half-life o...

A sample initially contains 5.2 moles of a radioac...

Decay of a 10.0-g sample of strontium-90 (t1/2 ...

Radium-226, which undergoes alpha decay, has a hal...

Cobalt-60, which undergoes beta decay, has a half-...

Cobalt-60, which undergoes beta decay, has a half-...

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One of the nuclides in spent nuclear fuel is U-235...

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A sample of an alpha emitter having an activity of...

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Each statement below refers to a comparison betwee...

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Bismuth-210 is beta emitter with a half-life of 5....

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Polonium-218 is an alpha emitter with a half-life ...

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The isotope 208Tl undergoes β decay with a half-l...

The isotope 208Tl undergoes β decay with a half-l...

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The isotope 9038 Sr is one of the extremely hazar...

Uranium-238 undergoes a slow decay step (t1/2 = 4....

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A sample of rock was found to contain 8.23 mg of r...

A sample of cobalt-60 (t1/2 = 5.27 yr), a powerful...

A laboratory investigation shows that a sample of ...

Isotope such as 26Al (half-life: 7.2 × 10 5 years...

An ancient sword has a blade from the early Roman ...

Americium-241 is widely used in smoke detectors. T...

Archeologists removed some charcoal from a Native ...

Krypton consists of several radioactive isotopes, ...

A layer of peat beneath the glacial sediments of t...

Radioactive copper-64 decays with a half-life of 1...

Radioactive copper-64 decays with a half-life of 1...

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Iodine-131 is used in the diagnosis and treatment ...

238U (t1/2 = 4.5×109 yr) begins a decay series tha...

Technetium-99 has been used as a radiographic agen...

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The bromine-82 nucleus has a half-life of 1.0 X 10...

How many curies are produced by 1.0 mol of 40K (t1...

Fresh rainwater or surface water contains enough t...

The fraction of a radioactive isotope remaining at...

A living plant contains approximately the same fra...

The fraction of a radioactive isotope remaining at...

Assume a constant 14C/12C ratio of 13.6 counts per...

The fraction of a radioactive isotope remaining at...

A rock contains 0.688 mg 206Pb for every 1.000 mg...

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In the 1950s, radioactive material was spread over...

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90Kr (t1/2 = 32 s) is used to study respiration. H...

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At a flea market, you’ve found a very interesting ...

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Carbon from the remains of an extinct Australian m...

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half-lives of different radioisotopes are given in...

The half-lives of different medical radioisotopes ...Be sure to answer all parts.The radioactive potass...Enter your answer in the provided box. What would ...Be sure to answer all parts.Given that the half-li...Some watch dials are coated with a phosphor, like ...The half-life of oxygen 15 is 124 s. If a sample o...Enter your answer in the provided box.What would b...A fossil is found to have a 14C level of 94.0% com...Fluorine-18 has a half life of 110 minutes, what p...Be sure to answer all parts.Archeologists can dete...The rate constant of a first-order process that ha...What is the half-life of an isotope that decays to...lodine-131 is a radioactive isotope. After 3.00 da...Be sure to answer all parts.The radioactive decay ...Given that the half-life of 238U is 4.51 x 109 ye...Gallium-67 is a radioactive isotope used in treatm...

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