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

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

iupac naming of ten bridged ligand containg complexes with their formulas

Transition elements of the f-block, Q. Transition elements of the f-block? ...

Q. Transition elements of the f-block? The salient features of the chemistry of the transition elements of the f-block. Due to filling of electrons in the f-orbitals of an inne

Does ph affect the enzyme activity, The concentration of hydrogen ions in s...

The concentration of hydrogen ions in solution affects the enzyme activity. Every enzyme has maximal efficiency under an optimum pH. As pH is one of the factors for the denatura

Effectiveness of blanching by peroxidase inactivity test, Q. Effectiveness ...

Q. Effectiveness of blanching by peroxidase inactivity test? • check the adequacy of the blanching process, • appreciate the importance of time-temperature relationship i

What is alpha radiation, Q. What is alpha radiation? Types of radiation...

Q. What is alpha radiation? Types of radiation there are three principal types of radiation are given off during radioactive decay. One kind is alpha radiation (α-radiation)

Chemical bonding, H2,Li2,B2 each has bond order equal to 1 , the order o...

H2,Li2,B2 each has bond order equal to 1 , the order of stability is

Find the value of limiting molar conductivity, (a) Describe how you would c...

(a) Describe how you would carry out a series of experiments to determine the molar conductivities (Λ m ) of an electrolyte at various concentrations, starting with the measurement

F block elements, why f elememnts kept sepertaly in periodic table

why f elememnts kept sepertaly in periodic table

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