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

Redox reaction, the set of numerical coefficients in the equation K2CrO4+HC...

the set of numerical coefficients in the equation K2CrO4+HCl=K2Cr2O7+KCl is

Nitro compounds have higher boiling points, i) Electrophillic substitution ...

i) Electrophillic substitution in case of aromatic amines takes place more readily than benzene. ii) Nitro compounds have higher boiling points than hydrocarbons having almost s

Calomel electrode, Construction and working of calomel electrode with a lab...

Construction and working of calomel electrode with a labelled diagram

Applications of coordination complexes, what are the applications of coordi...

what are the applications of coordination complexes analyticaly , biologically??

Requirements for the evaluation process, Q. Requirements for the evaluation...

Q. Requirements for the evaluation process? Some of the requirements to be kept in mind for the evaluation of the products are listed herewith: • People in a sensory test a

Given free energy, Br2(g)=2Br(g) dG=161.69KJ/mol at 298.15K Find kc and kp....

Br2(g)=2Br(g) dG=161.69KJ/mol at 298.15K Find kc and kp.

APPLICATIONS OF INORGANIC COMPOUNDS, find two different substances and how ...

find two different substances and how they are produced. Once you have this information, look at their properties and how they are used, and explain how these properties affect th

Oleic Acid in Olive Oil, What is the concentration of Oleic Acid in mg/100m...

What is the concentration of Oleic Acid in mg/100ml (Wt/Vol) in Extra Virgin Olive Oil (EVOO)?

Stereochemistry , 1. Alcohols and amines are both nucleophilic. Explain why...

1. Alcohols and amines are both nucleophilic. Explain why this reaction occurs to form Benadryl (diphenhydramine) 2. Outline a reasonable synthesis of the following:

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