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

Principal quantum number of an atom represents, Principal quantum number of...

Principal quantum number of an atom represents : (1) Size of the orbital (2) Spin angular momentum (3) Orbital angular momentum (4) Space orientation of the orbital

Free radical mechanism, define free radical mechanism of additon reaction

define free radical mechanism of additon reaction

THERMODYNAMICS, LIMITATION OF THIRD LAW OF THERMODYNAMICS

LIMITATION OF THIRD LAW OF THERMODYNAMICS

Radioactivity, what is the principal of radiometric titration

what is the principal of radiometric titration

Kostenecki synthesis of flavonoids, How is kostenecki synthesis of flavonoi...

How is kostenecki synthesis of flavonoid used to identify and optimise flavonoid?

Estimation of synthetic food colours in foods, Q. Estimation of synthetic f...

Q. Estimation of synthetic food colours in foods? Food colours in various products need to be isolated, identified and then quantitatively measured for their limits. Estimatio

Plazma, assignment of plazma

assignment of plazma

Convex lens, what is the graph between magnification and image distance for...

what is the graph between magnification and image distance for a convex lens..and how can we find the focal length for the lens using the graph?   Ans) The distance between the len

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