direct isotope dilution analysis (DIDA), Chemistry

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)

Soda lime glass and safety glasses, Q. Write an account of soda lime glas...

Q. Write an account of soda lime glass and safety glasses. Ans. Soda-Lime Glass or soft glass: It is the ordinary glass in which Na 2 O is added to the melt to oxide on hea

S block elements, Why lithium and beryllium markedly differ from other memb...

Why lithium and beryllium markedly differ from other members of their respective groups?

Electrovalent bond formation depends on, Electrovalent bond formation depen...

Electrovalent bond formation depends on: (1) Ionization energy (2) Electron affinity (3) Lattice energy (4) All the three above Ans: All the three above

Hybridisation, how does the concept hybridization applies in pharmacy field...

how does the concept hybridization applies in pharmacy field ?

Molecule having one unpaired electron, The molecule having one unpaired ele...

The molecule having one unpaired electron is: (1) NO (2) CO (3) CN - (4) Fe Ans: NO

Qualitative analysis, #question.why basic radicals are arranged in differen...

#question.why basic radicals are arranged in different groups.

Write the chemical equation, Write the chemical equation for the entire com...

Write the chemical equation for the entire combustion of heptane, C 7 H 16 . The heat of combustion for heptane is 4817 kJ/mol. How much heat could be released if 250 kg of hept

Boiler troubles, boiler corrosion

boiler corrosion

Hardness of water explain various units and their relationsh, maxmium 500 w...

maxmium 500 words

Structure of proteins - biomolecules, Structure of proteins The struct...

Structure of proteins The structure of proteins is extremely complex. The basic structure of a protein considers to the number and sequence of the amino acids in its polypeptid

Write Your Message!

Name

Email id

Message

Verfication Code

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!

Submit Assignment

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd