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

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

Construction and working of calomel electrode with a labelled diagram

The most covalent, Which is the most covalent: (1)  C- O              ...

Which is the most covalent: (1)  C- O                                               (2)  C- Br                    (3)  C- S                              (4)  C-F A

Determine the limiting reactant, 1. Wet air containing 4.0 mole% water vapo...

1. Wet air containing 4.0 mole% water vapor  at 76°F and 14.8 psia is passed through a column of calcium chloride pellets.   The pellets absorb 97% of the water and none of the oth

Determine the specific heat, Q. Determine the specific heat and claculate t...

Q. Determine the specific heat and claculate the total heat transfer? Ans. If a mug full of coffee has about 350 g of liquid inside, how much heat is lost as it cools from 87 o

Which corrodes is faster?, Which of the following is corrodes faster?Iron p...

Which of the following is corrodes faster?Iron pole in sea water or iton pole on the beach? Ans) There are various ways of reducing and preventing this form of corrosion. One w

Example on crystal field splitting in octahedral complexes, Q. Example on C...

Q. Example on Crystal field splitting in octahedral complexes? Here four ligands lie in one plane and the other two in a plane perpendicular to the first plane. Six ligands are

Catalyst, How sodium carbonate can increase surface area of a catalyst

How sodium carbonate can increase surface area of a catalyst

What are fuel cells and reactions takes place in it?, In recent years, the ...

In recent years, the scientists have designed the cells which convert chemical energy of a fuel directly into electrical energy. These cells are called fuel cells. These are the vo

Filtrate preparation., how is the filtrate prepared in basic radical testin...

how is the filtrate prepared in basic radical testing

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