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)

Sodium, what can be formed by sodium reacting with epsum salt

what can be formed by sodium reacting with epsum salt

Potassium manganate, about potassium manganate

about potassium manganate

Periodic table, History of periodic table

History of periodic table

Urea or carbamide - carboxylic acids, Urea or Carbamide - Carboxylic acid...

Urea or Carbamide - Carboxylic acids Urea may be referred like a diamide of an unstable and dibasic carbonic acid by which both the hydroxyl groups have been changed by -NH 2

Effectiveness of blanching by peroxidase inactivity test, Q. Effectiveness ...

Q. Effectiveness of blanching by peroxidase inactivity test? • check the adequacy of the blanching process, • appreciate the importance of time-temperature relationship i

Calculate the initial rate of polymerisation, (a) Given the values below, c...

(a) Given the values below, calculate the concentration of benzoyl peroxide required to prepare polystyrene with a number average molar mass of 400,000 by bulk free radical polymer

Structure of dna and rna - biomolecules, Structure of DNA and RNA The s...

Structure of DNA and RNA The sequence of bases along with the DNA and RNA chain makes its primary structure that controls the particular properties of the nucleic acid. An RNA

Amperometry, What practical applications does amperometry have? may I get e...

What practical applications does amperometry have? may I get elaborated answers supported by relevant examples?

MEASUREMENT OF OSMOTIC PRESSURE, PFEFFER METHOD

PFEFFER METHOD

Describe the charles law, Q. Describe the Charles Law and show graph betwee...

Q. Describe the Charles Law and show graph between temperature and volume? Ans. Charles' law describes the relationship between the temperature and the volume of a gas

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