In this experiment it takes about 10 microliters of solution to produce a spot 1 cm in diameter. If the Co(NO3)2 solution contains about 6 g Co2+ per liter, how many micrograms of Co2+ ion are there in one spot?
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In this experiment it takes about 10 microliters of solution to produce a spot 1 cm in diameter. If the Co(NO3)2 solution contains about 6 g Co2+ per liter, how many micrograms of Co2+ ion are there in one spot?
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- 1.50 mL of 0.15M Fe2(SO4)3 is diluted with deionized water to 25.00 mL in a volumetric flask. What is the concentration (in mg/mL) of iron (not Fe2(SO4)3) in the diluted sample? Please note that the units in this question are different than presented in the lab manual to avoid issues with exponents in a numerical answer. Of course if the units were in micrograms/g the results would be * 103 or (1000 times bigger).2. Formaldehyde. Qualitative and quantitative analysis.4. The bicinchoninic acid (BCA) assay is a non-specific assay that measures the quantity of protein in a sample. BCA functions as what type of reagent in the assay? buffering reagent colorimetric reagent oxidizing agent, reducing agent
- mix 500 ml of 0.1 M HCl solution with 300 ml of 2 M Ba (OH) 2 solution a) indicate the environment of the solution after mixing b) What color will the detectors, phenophthalein and litmus get?You are given a solution that contains a mixture of the following cations: Ag+, Ba2+, Mn2+ and Cu2+. Draw a flow chart to show how these cations are separated and indicate specific reagents used in each separation step.What is the difference between qualitative and quantitative analysis?
- 3 The gravimetric analysis of nickel in copper and iron, what is the purpose of "dipping" the precipitation in this experimentA student performed an acid-base titration in the lab and recorded the results as shown below. Look very carefully at the results and answer the questions which follow. 7. 演定結果 21 3. 346 27.40 00 36 終結摘定管讀數(cm) 開始定管數(Cm 所需演定州的積(cm) 44 標 (a) Why do we perform acid-base titrations in our labs? (b) In the titration performed by the student, what was the net ionic equation for the chemical reaction occurring?How much potassium oxalate can be added to 156.0 mL of 0.5 M [Cu(NH3)4]Cl2 before a precipitate of CuC2O4 begins to form? Ksp(CuC2O4)=2.9x10-8 and Kf(Cu(NH3)42+)=1.1x1012Include at least 3 significant figures in your answer.
- Blank correction is not done in a Mohr titration of NaCl. Is there a positive error, negative error, no effect, or error could not be determined In terms of the unknown Cl concentration?1) Listen The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 so if a professor made 1825 mL of a CaSO4(ag) solution then how many grams of calcium (Ca2+) ion would be present in this solution. 0.3948 gram Ca2+ ion 0.4965 gram Ca2+ ion 0.2527 gram Ca2+ ion 0.4747 gram Ca2+ ion 0.3396 gram Ca2+ ion 0.2943 gram Ca2+ ion 1591.docx LAB EXP. #3 -.docx Show Allthis type of analysis refers to the determination of the identity of the analyte in the sample