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

A simple set of diagrams to demonstrate dna replicat, ..a simple set of dia...

..a simple set of diagrams to demonstrate dna replication at the biochemical level

Solve, the nitride ion in lithium nitride is composed of 7 protons + 10 ele...

the nitride ion in lithium nitride is composed of 7 protons + 10 electrons. how?

Edta, #questionQ1. 0.28gm of CaCO3 was dissolved in HCl and the solution wa...

#questionQ1. 0.28gm of CaCO3 was dissolved in HCl and the solution was made to one litre with distilled water. 100 ml of the above solution required 28 ml of EDTA solution on titra

Find the number of intensive variables, Find the number of intensive variab...

Find the number of intensive variables? Consider the lime-kiln process CaCO 3 (s) → CaO (s) + CO 2 (g) Find the number of intensive variables that can be varied independen

Prove that process is irreversible, The second law states that where dS ≥ ...

The second law states that where dS ≥ dQ/T for a reversible process and dS = dQ/T for an irreversible process.   a.  Show that since dW 12 = -dW 21 (dW reverse = -dW forwar

Dunstan''s test, what are the equacyions of Dunstan''s test ???

what are the equacyions of Dunstan''s test ???

Water and its treatment, hardness of borewell water is less than that of se...

hardness of borewell water is less than that of seawater

Diagonol relationship, What is difference between aluminium and beryllium?

What is difference between aluminium and beryllium?

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