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

Explain the basic idea of how to develop a new product, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 How To Develop A Ne

The valence electron in the carbon atom are, The valence electron in the ca...

The valence electron in the carbon atom are: (1) 0        (2) 2          (3) 4       (4) 6 Ans: 4

Haloform reactions, what is the chemistry behind haloform reactions?

what is the chemistry behind haloform reactions?

Solutions, what is meant by abnormal molecular mass ?

what is meant by abnormal molecular mass ?

The associated wave length, A 200g golf ball is moving with a speed of 5 m ...

A 200g golf ball is moving with a speed of 5 m per hour. The associated wave length (h = 6.625 x 10 -34 J sec)is: (1) 10- 1 0 m                        (2) 10 -20 m

Secondary alkyl halide elimination v/s subsitution, 2-chloro propane in eth...

2-chloro propane in ethanol at optimum temp .what is the product?

Explain preparation of raw materials for processing, Preparation Of Raw Mat...

Preparation Of Raw Materials For Processing All the incoming raw materials, including packaging materials, should be evaluated and monitored to prevent potential contamination

Titration, what is the method to doing potentiometric titration

what is the method to doing potentiometric titration

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