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

.glycol, i wanted the glycol properties and its chemical reactions n prepar...

i wanted the glycol properties and its chemical reactions n preparation

D block, mixture of sulphur carbon and kmno4 is named what

mixture of sulphur carbon and kmno4 is named what

Two chair conformations of cis-1-3-dimethylcyclohexane, The two chair confo...

The two chair conformations of cis-1,3-dimethylcyclohexane

Benzaldehyde - aldehydes and ketones, Benzaldehyde - Aldehydes and Ketones ...

Benzaldehyde - Aldehydes and Ketones Benzaldehyde is simple aromatic aldehyde. It occurs in bitter almonds in the type of its glucoside, amygdalin (C 20 H 27 O 11 N). While amy

Burgers vector in screw dislocation, Burgers vector in screw dislocation ...

Burgers vector in screw dislocation The  Burgers vector, often signified by  b, is a vector that shows the magnitude and direction of the lattice distortion of dislocation in a

Determine chromium has the electronic configuration, Chromium has the elect...

Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d  have the same energy (2) 4s  has a higher energy than 3d (3)4s 1   is

Colloids, conclusion for assignment on topic applications of colloids

conclusion for assignment on topic applications of colloids

Chemical in cosmetics, Chemical in cosmetics The phrase cosmetics are t...

Chemical in cosmetics The phrase cosmetics are taken from the Greek word Kosmetikos. The meaning of this is decorating. Beautifying or enhancing complexion of skin. In middle a

Inorganic chemistry, what are binary compounds of hydrogen?describe briefly...

what are binary compounds of hydrogen?describe briefly hydrides formed by alkali metals and halogen?

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