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

Interactive periodic table, Interactive periodic table In this interact...

Interactive periodic table In this interactive periodic table animation you can view details of all components through clicking on it. You can select the colored through option

Tie line, tie line explain in with the help of phase rule

tie line explain in with the help of phase rule

Correct ground state electronic configuration chromium atom, The correct gr...

The correct ground state electronic configuration of chromium atom is: (1) [Ar] 3d 5 4s 1                (2)[Ar]3d 4 4s 2      (3) [AR]3d 6 4s 0                (4

Sulfur, SULFUR, SELENIUM AND TELLURIUM The elements known commonly as th...

SULFUR, SELENIUM AND TELLURIUM The elements known commonly as the chalcogens are in the same group (16) as oxygen. They form some compounds same to those of oxygen, but show m

Thermodynamics, Ask question #Minimu1. A laboratory animal exercised on a t...

Ask question #Minimu1. A laboratory animal exercised on a treadmill that was connected to a weight with a mass of 250. g through a pulley. The work done by the animal raised the we

#title.chemical formulas, #question.whats the chemical formula for cobalt(1...

#question.whats the chemical formula for cobalt(11)sulfide.

Radioactivity, ,Potassium-42 is a radioisotope that nutritionists use to de...

,Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hou

Name the chief ore of silver, Name the chief ore of silver. Explain with...

Name the chief ore of silver. Explain with chemical equations the extraction of silver from this ore.

How are mixed ferrites prepared for industrial uses, What are ferrox cubes ...

What are ferrox cubes and ferrites? How are mixed ferrites prepared for industrial uses? Give an account of applications of ferrites pointing out their advantages over a ferromagne

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