1. An investigator is interested in identifying which metals are present in seaweed found off the coast of Big Island. The investigator needs to perform which kind of analysis? (please explain) a. gas chromatography b. quantitative analysis c. qualitative analysis d. molecular analysis   2. An investigator wants to find out how much nickel (Ni) is accumulated in seaweed off of the Big Island. The investigator needs to perform which kind of analysis? (please explain) a. gas chromatography b. quantitative analysis c. qualitative analysis d. molecular spectroscopy   3. If the signal-to-noise ratio (SNR) for an experiment is 3 after 10 experiments have been averaged, how many experiments should be performed and averaged to achieve an SNR of 6? (please explain) a. 20 b. 36 c. 40 d. 100

Q: Briefly describe the purpose and importance of the following procedures in the analytical process:…

A: Sample preparation is the most important step in chemical analysis to start with.

Q: The accuracy of an instrument was tested by conducting a Reference Standard Material (RSM)…

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Q: How would you turn a qualitative experiment into a quantitative experiment?

A: Interpretation -  We have to explain how we can turn a qualitative experiment into a quantitative…

Q: Question attached

A: In this given video link, the experimental determination of the empirical formula of magnesium oxide…

Q: 26 1 0 14.12Mg+On → le+. O26 11 Na O 27 13 Al 27 11 Na O O 27 12Mg

A: The Correct Answer is Option C Na [ Mass Number- 27 & Atomic Number - 11]

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Q: Part B Observe and record the appearances of the metal strips and the solutions in the test tubes.…

A: Appearance of metal and metal solution

Q: Table 1. Tabulated data from Figure 2. Rel. Abundance m/Z Proposed Identity ~1 45 100 44 ~11 28 ~2…

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Q: 6. Given your experience in mass determinations (Experiment 1) and with volumetric glassware…

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A: Interpretation - To explain three different types of mass spectrometers and we have to differentiate…

Q: 1 m.e. of Na+ will replace how many m.e. of H+? * a.) 1 b.) 23 c.) 0.23 d.) 0.1

A: n factor of Na+ is 1. n factor of H+ is 1.

Q: How important is identifying chemicals and Laboratory apparatuses used in an analysis?

A: You should always know your lab equipment well before you do any type of experiment because without…

Q: neutralization, the products are   A. sodium chloride   B. salt and water   C. a nonmetal…

A: Neutralization reaction It is a reaction between an acid and a base

Q: 1. Using your data from Part I of the experiment, determine the (Sr) in the sample of strontium…

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Q: What type of balance are you going to use if you are weighing a sample for sample analysis? Explain…

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Q: What problems of society can analytical chemists help in finding solutions? How do they do it?…

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Q: A sample of stainless steel contains 10.5% chromium by mass. What mass of chromium, in grams, is…

A: Given information,             Stainless steel sample contains 10.5% chromium by mass.…

Q: Part A Measure and record the masses of all the metal strips you set out in front of the test tubes.

A: 1. molar mass of Magnesium is24.305 g/mol. 2. Zinc mass number of 65.39 g/mol. 3. Copper atomic mass…

Q: When we need sample preparation for analysis? use your own words to write

A: 1) Preparation is a very important step in most analytical techniques because the techniques are…

Q: You collect a sample of seawater containing salt. The original sample weighs 15.67 g. You dry the…

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Q: The analyst would use an analytical balance during sample analysis, what would you recommend her/him…

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Q: 1. What is a spectrophotometer used for in a cobalt chloride solution analysis?

A:

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Q: Suppose you have a bucket of sand containing 1.5 billion grains of sand ( 1.5×109 grains). Most of…

A: Total number of grains = 1.5 ×109 grains Concentration of brown sand is = 4.0 %  The number of brown…

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A: Percentage of water  = mass of watermass of anhydrate  x 100

Q: My answer was 29.6%, why did i get it wrong?   In 1928, 44.8 g of a new element was isolated from…

A: I'm not exactly sure how u got 29.6 %. But the answer can not be 29.6 % for sure as its a quite high…

Q: What is the purpose of the acetic acid experiment?

A: We have to discuss about the purpose of acetic acid experiment.

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A: Given as, n(CH3)SiCl 2 +2nOH→2nCl- +nH2O+[(CH 3)2SiO] n ​

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Q: Use the sample experimental data to calculate the mass of residue (BaCl2)  Mass of pan 15.110 g…

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Q: Why does the test for the presence of potassium involve a flame test?

A: The question is based on the concept of qualitative analysis . We have to explain the flame test for…

Q: 3) "For one smalt bass which could have been bought at any trustworthy market for sixty-five cents,…

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Q: Mass of watch glass, filter., and CaCO3 13.57 g Mass of watch glass and filter Mass of CaC03 12.43 g…

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Q: 1. What is the mass of the water used for this experiment?

A: To solve this problem we will use the mass of empty can and the mass of can and water .

Q: C. The lead(II) oxide was weighed before and after the additions. d. - 19 18 17 16 before 9 15 ii.…

A: c. Mass of lead(II) oxide is added to dilute nitrile acid is (18.2 g - 14.4 g) = 3.8 g.   d. i)…

Q: 11. A stack of 500 sheets of typed paper is 1.9 inches thick. The thickness, in inches, of a stack…

A: If the stack of 500 sheets of paper is 1.9 inches thick, then each sheet of paper has thickness of…

Q: When we need sample preparation for analysis? use your own words to explain

A: Given :  To explain a need of sample preparation for analysis.

Q: What is polarity and how is polarity related to how chromatography works?

A: In chemistry, polarity of a molecule is defined as the electric charge distribution over the atoms…

Q: Name the following Fe(NO3)2

A: The compound formula represents the number of atoms in a molecule or in a compound. The given…

Q: True or False? Why? In ion chromatography a single column containing ion exchange resin allows…

A: Now a days ion exchange chromatograpy is one of the best tool used in various field of science for…

Q: When we need sample preparation for analysis? Explain.use your own words to write

A: Sample preparation is a very important part of analytical chemistry. Analytical chemistry is one of…

Q: Part 2: Dehydration of a hydrate salt 5. 6. Explain why a change in the mass of the chemical…

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A: As per our guidelines we can only solve first three sub-parts . Please resubmit other questions as…

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