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

The shape of p -orbital is, The shape of P -orbital is : (1) Elliptical ...

The shape of P -orbital is : (1) Elliptical (2) Spherical  (3) Dumb-bell (4) Complex geometrical Ans: Dumb-bell

The four quantum numbers of the valence electron potassium, The four quantu...

The four quantum numbers of the valence electron of potassium are : (1) 4, 1, 0 and 1/2              (2) 4, 0, 1 and 1/2    (3) 4, 0, 0 and +1/2      (4) 4, 1, 1 and 1/

Plazma, assignment of plazma

assignment of plazma

Organic reations, what is addition,substitution,rearrangement,elimination r...

what is addition,substitution,rearrangement,elimination reactions?

Matter, name any 10 chemical compound used at homewith their molecular form...

name any 10 chemical compound used at homewith their molecular formula

Scale and sludge formation, How scale and sludge formed in boilers explain ...

How scale and sludge formed in boilers explain in kannKan

0 order, 0 order half life formula

0 order half life formula

The maximum number of electrons in an orbital, Which of the following princ...

Which of the following principles/rules limits the maximum number of electrons in an orbital to two: (1)  Aufbau principle (2) Pauli's exclusion principle (3) Hund's rule

Explain the compound decarboxylates, Explain The compound decarboxylates ...

Explain The compound decarboxylates The compound decarboxylates; it is a disubstituted malonic acid in which the two a substituents are connected within a ring. The net effect

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