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

Basic dyes - classification of dyes, Basic dyes: These types of dyes a...

Basic dyes: These types of dyes are the hydrochlorides or zinc chloride salts of colour bases comprising basic group sets. These dyes act along with anionic sites available on

Ionic and covalent bonds, Ionic and covalent bonds are present in: (1) ...

Ionic and covalent bonds are present in: (1)  CCl 4                                               (2)  CaCl 2              (3)  NH 4 Cl

Full Balanced Equations, #question.What is the balanced equation for the re...

#question.What is the balanced equation for the reaction of aluminium nitrate solution and sodium carbonate solution; where aluminium hydroxide is formed.

D and f block, why a small amount of an acid is added while preparing solut...

why a small amount of an acid is added while preparing solution of potassium dichromate?

Find the pressure in the droplet, Q. The pressure in a liquid droplet of ra...

Q. The pressure in a liquid droplet of radius r is greater than the pressure of the surrounding equilibrated gas phase by a quantity 2 =r, where is the surface tension. (a) Cons

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

Limitations of hybrid orbitals, Q. Limitations of Hybrid orbitals? ...

Q. Limitations of Hybrid orbitals? It gives no idea whether a particular metal ion would prefer to have any particular geometry say, an octahedral or tetrahedral with a giv

Tendency to form electrovalent bond is largest, The tendency to form electr...

The tendency to form electrovalent bond is largest in (1)  A                                         (2) B (3)  C                                          (4)  D

Water treatment, What is calgon n phosphate conditioning n which one is bet...

What is calgon n phosphate conditioning n which one is better?

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