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

Photon absorption for ir spectroscopy, Photon absorption for IR spectroscop...

Photon absorption for IR spectroscopy                                                                  Photon absorption for IR spectroscopy

Explain consumer testing, Consumer testing Consumer testing is the ne...

Consumer testing Consumer testing is the next crucial aspect in product development. Consumer testing can be done in three ways: 1.  In-house laboratory testing   2.  Ho

#title.acetaldehyde and ketone., #uestion.. what is difference between acet...

#uestion.. what is difference between acetaldehyde and ketone

Determine rate of flow, Containers in Illustrations C and D are identical ...

Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wit

Determine the ph of lysine buffer, Suppose that lysine is dissolved into a ...

Suppose that lysine is dissolved into a buffer to a concluding concentration of 1 mM. Into this buffer, 80 percent of the lysine's side-chain amines are protonated. Determine the p

Types of addition reactions, Types of addition reactions Addition react...

Types of addition reactions Addition reactions can be categorized into three categories on the basis of the nature of initiating species. (A) Electrophilic additions (B)

How will you synthasize benzylamide from aniline? , 1)Aniline is more basic...

1)Aniline is more basic because of the strong electron withdrawing effect of the carbonyl oxygen on the amide of acetanilide. 2)Aniline is more basic because of  the strong electro

Purge and recycle stream, The fresh feed to an ammonia production process c...

The fresh feed to an ammonia production process contains nitrogen (N2) and hydrogen (H2) in stoichiometric proportion, along with an inert gas (I). The feed is combined with a re

Law of constant proportion., plzzzzzzz sir giv me some information about la...

plzzzzzzz sir giv me some information about law of constant proportion my email id is [email protected]

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