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1. What type of samples can be analyzed using AAS?
2. Explain in your own words, the functions of each parts of a typical AAS.
3. Give advantages and disadvantages on using AAS.
Step by step
Solved in 3 steps
- 4. need help,,4. Why do you determine a mass by difference? You use this because it's typically more accurate. 5. What are equivalence points and end points? How do they differ? equivalence point- the point @ which stoichiometric quantities are brought together, end point- the the equivalence point is theoretical, when end poi 6. Why should the standardized NaOH solution be kept in a stoppered bottle? pr 7. What is parallax? Why should you avoid it? Parallax is the upperent displacement or the di da in direction of an object as seen from two diffe points. са It should be colded because it ca errors in volume measurements. Copyright © 2018 Pearson Education, Inc.Calculate the volume of NaOH used in each trial. Use sig figs.
- Consider the following compounds for Questions 1-5: A. Bromoethanal B. 4-Nitrobenzoic Acid C. Toluene D. 3-Hexanol E. 4-Ethylaniline F. 2-Butanone G. 4-Methylphenol H. 2-HexanolSuppose you test a sample of a carbonated beverage with concentrated nitric acid and 2.5% ammonium molybdate, and a precipitate forms. What would this tell you about your carbonated beverage? a. This will tell you that the test solution turned into a solid. Carbonation refers to carbon dioxide dissolved in a liquid, and the rate at which carbon dioxide dissolves or is soluble depends on temperature. b. Testing a sample of a carbonated beverage would prove to be carbonated. c. A precipitate forming would show the beverage contains calcium ions. d. The carbonated beverage would test positive for ammonium ions. e. The carbonated beverage may have similar contents to the milk. f. The test would tell you that the carbonated beverage contains phosphate.4. Why is it necessary to standardize a sodium hydroxide solution? a. Sodium hydroxide is basic b. Need to standardize before you can use an acid-base indicator c. Sodium hydroxide absorbs carbon dioxide and water d. Because K.H.P. is a primary standard
- 1. What is the molecular weight of disodium ethylenediaminetetraacetate? 2. What is the weight (in grams) to prepare a 350 mL of 0.047 M solution? 3. What is the concentration when converted to Normality? 4. What would be the titer value (in milligrams) of this solution be in terms of magnesium sulfate?314.831624. Report this value to the following number of sig. figs.: a)3 sig. figs.: _____________________ b)6 sig. figs.: _____________________ c)1 sig. fig.: ______________________ d)2 sig. figs.: ______________________Write the correct phase symbols next to each term. A through FA. Iron in elemental form _______B. A solution of sodium nitrate ______C. Water ______D. Nitrogen in elemental form _____E. A precipitate _______F. Soluble calcium ions ___________
- 1. Calculate the exact mass of NaOH needed to prepare 1.0L of 0.25N NaOH for standardization 2. Compute for the volume of HCl needed to prepare 0L of 0.25N HCl.102. Homogenous mixture: A. Emulsion B.Hydroalcoholic Solution C. Air D Two of the choices 103. Three Bromides Elixir: I. Sodium II. Potassium III. Calcium IV. Iron V. Ammonium A. II, III, IV B. I, II, IV C. I, II, III D. III, IV, V E. I, II, VMultiple Choice Each of the numbered items or incomplete statements is followed by answers or by completions of the statement. Select the one lettered answer or completion that is best in each case. Write your answer before each number. 54.Primary standard used in the standardization of sulfuric acid a. Benzoic acid C. Sodium carbonate Sulfamic acid b. Potassium hydrogen phthalate d. 55. When a weak base is titrated with weak acid, the indicator used is a. Methyl red C. Methyl orange phenolphthalein b. Titration not possible d. 56. Quality control department where sampling and physical tests of all shipments of packaging materials is being done a. Biological Testing Laboratory d. Quality Coordinating office b. Analytical Laboratory e. Specification & Analyrtical Development section C. Material Inspection Section S