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

Comparative study of transtional elements, explain why Ni(co)4 is known whi...

explain why Ni(co)4 is known while Ca(co)4 is not known

Diaper rash alternative, RL, a 28-year old first time father, was watching ...

RL, a 28-year old first time father, was watching his 4-month old baby for the weekend while his wife was away at a sales meeting. Things were going well. He had run out of breast-

Chemical Equilibrium, why is the reaction mixture does not have 50% reactan...

why is the reaction mixture does not have 50% reactants and 50% products?

What are the properties of nitrogen, Q. What are the Properties of Nitrogen...

Q. What are the Properties of Nitrogen? Ans. Physical Properties of Nitrogen Nitrogen is a colorless, odorless and tasteless gas. It is particularly unreactive at roo

Regeneration of true exhausted zeolite bed, Q.   How is true exhausted Zeol...

Q.   How is true exhausted Zeolite bed regenerated? Give the merits and demerits of Zeolite process.                                                                    OR

Merits of atomic fluorescence spectrometry technique, Merits of atomic fluo...

Merits of atomic fluorescence spectrometry technique: The merit of the AFS methods lies within the greater sensitivity achievable because of low background and interference.

Qualitative analysis, easy ways to find basic radicals in qualitative analy...

easy ways to find basic radicals in qualitative analysis

Heat Transfer Problems, 200 g of water at 30 degrees C is mixed with 20 g o...

200 g of water at 30 degrees C is mixed with 20 g of silver at 350 degrees C, what''s the final temp?

The specific charge of proton & then for an a-particle, The specific charg...

The specific charge of proton is  9.6 X 10 6 CKG -1   then for an α-particle it will be : (1) 38.4X 10 7 Ckg -1           (2)  19.2x 10 7 Ckg -1         (3) 2.4 x 10

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