User Account

All Pages

Estimate the concentration of the gold

Assignment Help Chemistry
Reference no: EM132439089

Problem: The gold content of a concentrated sea water sample was determined using atomic-absorption spectrometry with the method of standard additions. The following results were obtained:

Gold added (ng·mL-1 of concentrated sample): 0 10 20 30 40 50 60 70

Absorbance (r.u.): 0.257 0.314 0.364 0.413 0.468 0.528 0.574 0.635

Estimate the concentration of the gold in the concentrated sea water, and determine the confidence limits for this concentration.

Reference no: EM132439089

Questions Cloud

Identify elements that are found on food items : Utilizing the information on the periodic table on the first page of the textbook, identify 3 or more elements that are found on food items on a daily basis.
Write the expression for the equilibrium constant : Pure iron metal can be produced by the reduction of iron(III) oxide with hydrogen gas.
Compute the payout ratio and earnings per share : Feb. 1 Issued 4,500 shares of common stock for $27,000. Compute the payout ratio, earnings per share, and return on common stockholders' equity
How can cessna incorporate factors in marketing planning : Compare and contrast this site with the site for imaging equipment marketed by General Electric. Which site serves the purchasing process better?
Estimate the concentration of the gold : Estimate the concentration of the gold in the concentrated sea water, and determine the confidence limits for this concentration.
Theoretical yield of sulfuric acid : What is the theoretical yield of sulfuric acid and the percent yield of the reaction? (I'm assuming one mole of any gas occupies 22.4 L.).
Discuss difference between calculated and manual metrics : What would be a KPI for the Coca-Cola website? How about the Pepsi Facebook page?discuss the difference between calculated and manual metrics.
What is the percent yield of the reaction : A chemist reacts 2.00 mol H2 with excess N2. The reaction yields 0.80 mol NH3. Can you help me understand what is the percent yield of the reaction?
How can build true loyalty : Do some research on the general subject of loyalty as a personal value? Use your understanding of loyalty to add to the discussion about how grocery stores

Reviews

Write a Review

Chemistry Questions & Answers

  A researcher collects 00603 mol of an unknown gas by water

a researcher collects .00603 mol of an unknown gas by water displacement at a temperature of 28.8 deg.c and a 0.940 atm

  Define what are the salt ions in the elution buffer good for

Describe a common buffer system and elution method in ion exchange chromatography. What are the salt ions in the elution buffer good for

  What is the molarity of hno3

25.0 mL of 1.50M LiOH are neutralized by 15.0mL of nitric acid. what is the molarity of HNO3?

  Explain what individual atoms or functional groups

What individual atoms or functional groups could you add to the carbons to make the molecule hydrophobic?

  Explain hemoglobin and myoglobin contain a prosthetic

Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom. Molecular oxygen binds irreversibly to the Fe(II) atom in heme.

  How many milliliters of a stock solution would you need

how many milliliters of a stock solution of 2.00 m kno3 would you need to prepare 100.0 ml of 0.150M KNO3

  What is the molarity of the ammonia solution

A total of 19.48 mL of acid is required to reach the equivalence point. What is the molarity of the ammonia solution.

  Alter the ionic strength to meet the discharge regulations

Cad4U a local metal processing facility is at present violating its discharge permits for dissolved cadmium, Cd2+. The regulations are based on activity rather than concentration as well as so the savvy ore unethical chief chemist decided to alter..

  Complete the structure by adding bonding pairs

Complete the structure by adding bonding pairs or lone pairs as appropriate. Then answer the questions that follow.

  The triprotic acid h3a has ionization constants

Problem- The triprotic acid H3A has ionization constants of Ka1 = 2.0*10^-3, Ka2 = 8.9*10^-9, and Ka3 = 3.9*10^-11. 1. Calculate the following values for a 0.0190 M solution of NaH2A.

  Explain what is the atomic mass of tc

What is the atomic mass of Tc as it would appear in the periodic table. Do not enter units with your answer and use the correct number of significant figures.

  Determine the delocalization energy of the ion

Set up and solve the Hiickel secular equations for the Π electrons of CO3-2. Express the energies in terms of the Coulomb integrals αo and αc and the resonance integral β. Determine the delocalization energy of the ion.

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

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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