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

Correct configuration of fe+3 [26] is, Correct configuration of Fe +3   [2...

Correct configuration of Fe +3   [26] is: (1) 1s 2 , 2s 2 , 2p 6, 3s 2, 3p 6 , 3d5          (2) 1s 2 , 2s 2, sp 6 , 3s 2 , 3p 6 , 3d 3 , 4s 2     (3) 1s 2 , 2s 2 , 2p

Evaluate total solids in milk, Q. Evaluate Total Solids in Milk? Total ...

Q. Evaluate Total Solids in Milk? Total solids determination is a common procedure in many manufacturing plants using dairy products. The total solids in milk can be calculat

The model of trans-bicyclo decane, The model of trans-bicyclo decane T...

The model of trans-bicyclo decane The model of trans-bicyclo[5.3.0]decane is easier to build. The larger is a ring, the easier it is to compress the dihedral angle of the tran

Alcohols, Preparation of dihydric alcohols

Preparation of dihydric alcohols

Carbonyls, how to find the structure of Mn2(CO)10

how to find the structure of Mn2(CO)10

S block., prperties of s block elements?

prperties of s block elements?

Characterization of wastewater, a) Describe why not all of the organic matt...

a) Describe why not all of the organic matter in wastewater is converted to carbon dioxide and water in biological treatment. b) What is the importance of the BOD in the charact

Principle underlying the quantitative analysis, Principle underlying the qu...

Principle underlying the quantitative analysis: In flame photometry, the thermal energy from flame is utilized to convert the analyte within gaseous atoms and then to excite t

Hybridization activity, Can you give me an activity about hybridization? I ...

Can you give me an activity about hybridization? I badly need some help

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