direct isotope dilution analysis (DIDA), Chemistry

Assignment Help:
A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable and low. The determination is done by direct isotope dilution analysis (DIDA). The isotopic abundances of 186Os and 190Os are 1.58 and 26.4%, respectively. 7.80 x 10-9 g of isotopically pure, stable 186Os is added to the unknown solution and mixed thoroughly, and then a small amount of pure Os is extracted from the mixture. With a mass spectrometer, the 190Os/186Os mass ratio in the extracted sample is found to be 7.40. Calculate the amount of Os originally present in the unknown solution.

Related Discussions:- direct isotope dilution analysis (DIDA)

Qualitative analysis, Why is ammonium (NH4) seperately placed in zeroth gr...

Why is ammonium (NH4) seperately placed in zeroth group in detection of basic radical in qualitative analyisis?

Calculate heat energy required, Calculate how much heat energy is required ...

Calculate how much heat energy is required to raise the temperature of a cube of copper of side 2cm. from 300 to 320k. given: density=8933kg/m cube , atomic weight=63.55, cp=24j/k/

A Chemical Reaction, In the chemical reaction, Al(s) + CuCl2(aq) --> Cu(s) ...

In the chemical reaction, Al(s) + CuCl2(aq) --> Cu(s) + AlCl3(aq), why did the Copper turn green after being left for a day?

Illustrate about nuclear particle, Q. Illustrate about nuclear particle? ...

Q. Illustrate about nuclear particle? In 1932 Rutherford with Chadwick demonstrated the existence of the neutron a nuclear particle having no charge but with nearly the same

Atom of a chemical element, The atomic weight is the weight of an atom of a...

The atomic weight is the weight of an atom of a chemical element.  For instance, the atomic weight of oxygen is 15.9994 and the atomic weight of hydrogen is 1.0079.  Write a script

Assignments, I have 4 assignments for unit 22 chemistry btec level. Are you...

I have 4 assignments for unit 22 chemistry btec level. Are you able to do my assignments by friday?

#title. chemical bonding., sometimes we put a coordinate bond or sometimes ...

sometimes we put a coordinate bond or sometimes we put a double bond in between s and a nonprotonated o atom in the structure of h2so4.is there any diifference in between these two

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