half life, Chemistry

Assignment Help:
A 64-g sample of germanium-66 is left undisturbed for 12.5 hours. At the end of that period, only 2.0 g remain. What is the half-life of this material?
4. With a half-life of 28.8 years, how long will it take for 1000 mg of strontium-90 to decay to 125mg?
5. Cobalt-60 has a half-life of 5.3 years. If a pellet that has been in storage for 26.5 years contains 14.5 g of cobalt-60, how much of this radioisotope was present when the pellet was put into storage?
6. A 1000 g block of phosphorus-32, which has a half-life of 14.3 days, is stored for 100.1 days. At the end of this period, how much phosphorus- 32 remains?

Related Discussions:- half life

Classification of polymers - thermoplastics, Classification of polymers - T...

Classification of polymers - Thermoplastics These are the polymers that can be simply softened repeatedly while heated and hardened when cooled along with little change in the

Displacement of electron in covalent bond, a complete explnation about ind...

a complete explnation about inductive effect with example

Periodic elements, What periodic elements are found in computers

What periodic elements are found in computers

Coordination complexes, iupac naming of ten bridged ligand containg complex...

iupac naming of ten bridged ligand containg complexes with their formulas

Shahid Abbas, diagonal relationship and anomalous behaviour of the each ele...

diagonal relationship and anomalous behaviour of the each element of the periodic table

How disinfection of sludge can be achieved, Question: (a) Explain the p...

Question: (a) Explain the precautions that should be taken by plant operators while handling chlorine gas used in disinfection of wastewater. (b) Show why disinfection of sl

Properties, what are the physical properties of acetic acid?

what are the physical properties of acetic acid?

Organic chemistry, the measured dipole moment of-para nitroaniline (6.2D) i...

the measured dipole moment of-para nitroaniline (6.2D) is larger than the value calculating using empirical group moment (5.2D)

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd