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

#title.Radiometric titrations, Limitations,Procedure, Advantages of radiome...

Limitations,Procedure, Advantages of radiometric titratons

Organic chemistry , Draw the important resonance contributors for the benze...

Draw the important resonance contributors for the benzenoium intermediate in the bromination of aniline and explain why ortho, para substitution predominates ?

Maximum electrons in a d -orbital, Maximum electrons in a d -orbital are: ...

Maximum electrons in a d -orbital are: (1) 2        (2) 10        (3) 6      (4) 14 Ans: 10

LAWS OF CHEMICAL COMBINATION, WHAT ARE THE APPLICATIONS OF LAW OF CHEMICAL ...

WHAT ARE THE APPLICATIONS OF LAW OF CHEMICAL COMBINATION

Electrodic potential, calculate the electrode potential of a platinum elect...

calculate the electrode potential of a platinum electrode immersed in a solution containing Ce4 + ions (cCe4 + = 0.05M) and Ce3 + ions (cCe3 + = 0.1M)

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

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