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

Periodic table, In a period, the element with maximum atomic volume belongs...

In a period, the element with maximum atomic volume belongs to which group?

What is function group, An atom or group of atoms, which verify the charact...

An atom or group of atoms, which verify the characteristic properties of the Substance it, is known as functional group.

Matter, why the water is compound

why the water is compound

Name the chief ore of silver, Name the chief ore of silver. Explain with...

Name the chief ore of silver. Explain with chemical equations the extraction of silver from this ore.

Salicylic acid, physical properties of salicylic acid?

physical properties of salicylic acid?

Reverse hyperconjugation, what is reverse hyperconjugation? explain with an...

what is reverse hyperconjugation? explain with an suitable example....

Electron configurations, what is the unabbreviated electron configuration o...

what is the unabbreviated electron configuration of lanthanum

Hittorf method.., determination of transport number by hittorfs method.

determination of transport number by hittorfs method.

Physical chemisty, Calculate the ratio of d number of molecules in two ener...

Calculate the ratio of d number of molecules in two energy levels at 27''c given E2=9.75x10"-13erg/mol E1=6.95X10"-13erg/mol g1=2 g2=3

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