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

P block, electronic vinyas of led

electronic vinyas of led

Fevorskii reaction, Ask what are the benefit of fevorskii reaction questio...

Ask what are the benefit of fevorskii reaction question #Minimum 100 words accepted#

Uses of methane - alkanes, Uses of methane - Alkanes (1) In the develop...

Uses of methane - Alkanes (1) In the development of compounds such as formaldehyde, methyl chloride, methyl alcohol, chloroform, carbon tetrachloride, etc. (2) In the prepar

Organic, convert benzene to benzaldehyde

convert benzene to benzaldehyde

Organic chemistry, What is electron migration effects and mention their app...

What is electron migration effects and mention their applications

Rubber - polymer, Rubber - polymer It is a polymer that is able of retu...

Rubber - polymer It is a polymer that is able of returning to its original size, shape or length later than being deformed or stretched. It a kind of elastomer. Rubber is of tw

Atoms, what are atoms made of ?

what are atoms made of ?

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