What was the purpose of the alumina column?

Q: "Analytical data are never more reliable than the sampling technique". Explain this statement.

A: Answer- Analytical data is a collection of data that is used to support decision making and/or…

Q: In the hydrometer method, why do we need to treat the soil sample with H2O2?

A: The hydrometer analysis is used to determine the particle size distribution of soil particles of…

Q: Answer the questions using one of the words or phrases from the following list. We suggest that you…

A: Accuracy -In a set of data or measurements accuracy is measurement of how close the data is from its…

Q: How does an ESI source work (from injection to ions beam formation)?

A: Electrospray ionization (ESI) is a technique used in mass spectrometry to produce ions using an…

Q: If you wanted to make a red object look the same as a black object, which filter (or filters) would…

A: A filter is transparent material that absorb some colour and allow the other colours to pass .…

Q: Which apparatus is shown here: Select one: test tube rack Funnel Beaker O Pipette chemical reagent…

A: The above diagram indicates the chemical apparatus which is used to place test tube.

Q: Why is paper used for weighing dry, non-hygroscopic chemicals only? Why is watch glass used…

A: When weighing chemicals, only dry, non-hygroscopic substances may be weighed on paper, otherwise,…

Q: These technique are time consuming, costly and frequently needcomplementary information about sizing…

A: We will determine which techniques are time consuming costly and frequently need complementary…

Q: refractometer

A: In this question we have to explain the principle on how to determine the concentration of syrup…

Q: 6. List common analytical apps for SPE? 7. What is sample preparation in analytical chemistry?. WHY…

A: Solid Phase Extraction(SPE) is a sample preparation technique that makes use of a solid adsorbent…

Q: David is in dilemma to choose a suitable chromatographic detector for gas chromatography analysis.…

A: The detector which detects the pesticide content in vegetables has to be given and the two…

Q: Why asbestos is used in chromatography ?

A: asbestos : "The crude mineral is  a piece of rock or stone. It has  been called a physical paradox…

Q: 6. What causes the components in a mixture to separate in a chromatography experiment?

A: Chromatography is the special type of experimental procedure that can be used for separation of…

Q: What are pipeline slurry systems? How do they function?

A: Slurry is a mixture of solid in a molten state. It is denser than liquid and is mobile. The…

Q: What is the correct ratio of sample to KBr? O 1) 1:10 ratio O 2) 1:50 ratio 3) 1:2 ratin

A: Spectroscopy plays an important role in the analysis of chemical compounds. Infrared spectroscopy is…

Q: Describe one alternative column other than a C18 for caffeine detection in terms of stationary phase

A: C18 columns are present in high performance liquid chromatography (HPLC) that are utilized as a…

Q: Sapling Learning 3.18 V Voltmeter Mg Ag KNO, salt bridge 1.0 M Mg" 1.0 MAg Zn Cu

A: By writing half reaction of cell according to given cell.

Q: 759.3 tar1)(Larmum (0.09206tatm ) (97. 5+ a73.1SK) molk PV 160.0(0.2864) = V= a85.4mL P-759.3 torr…

A: Volume = 285.4 ml    ....Or  because 1L = 1000 ml   ...so,  = 285.4 ml × (1L / 1000 ml ) = 0.2854 L.…

Q: INSTRUCTIONS: Encode your final answers on the answer sheet for quizzes. For illustration-type of…

A: #1: Lineweaver-Burk Plot is drawn from the reciprocal form of Michaelis-Menten equation which is…

Q: A student accidentally started the chromatographic run without saturating the beaker with the…

A: Answer - The correct option is (d) All of the above Explanation - According to the question -…

Q: In three sentences, describe the principle of chromatography.

A:

Q: The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose.…

A: The glassware used in the lab are divided into 2 types that is qualitative and quantitative. As it…

Q: The optical methods analyze samples based on collecting the data resulted from the interaction of…

A: The analysation of the sample means the determination of the types of the group, their positions and…

Q: What precautions should you take in handling a cuvet and placing it in the spectrophotometer?

A: Interpretation: The precautions taken in handling a cuvet and placing it in the spectrophotometer…

Q: 4. A student performs the HCl tests on the three solid samples as described in Step 5 of Part B and…

A: Explanation:Upon being heated, some substances undergo chemical changes, some undergo physical…

Q: Why were you required to handle the chromatographic paper only at its corners?

A: Chromatographic papers used in Paper Chromatography which is used as a separation technique for the…

Q: Analytical Chemistry   Imagine you have a charcoal (Coconut based) and you want to separate the…

A:

Q: Is the separation of the mixture shown here a physical orchemical process?

A: To explain whether the method of separation of mixture via column chromatography is physical or…

Q: In a filtration of suspended cells under full vacuum using a 20 cm Büchner funnel, you collect data…

A: To decrease the time require for filtration- of solution of given volume we use a particular type of…

Q: mica 1) 2)

A: ->First of all there occur bromination of benzene.then acetylation occur.

Q: A 0.32 g soil sample was digested and diluted to 481-mL. The diluted sample was analyzed for Zn by…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: ing statements is true of the detection limit of an instrument?

A: The first question is based on antiquity, so instead of solving it, solve the second question with…

Q: Discuss how sample concentration is determined using the standard addition method. What limitation…

A: Standard addition method includes the eliminate matrix effects that means it assess whether a sample…

Q: Question 45 This type of pump is used to move mobile phase through a CZE column: Reciprocating pumps…

A: Question 45:  This type of pump is used to move mobile phase through a CZE column: Answer is: None…

Q: Why to use acid or base for the development of fluorescent carbon dots?

A: Carbon-Dots are a kind of zero-dimensional nanomaterials. They are environment friendly and possess…

Q: explain briefly the principle on how to determine the concentration of syrup using hand…

A: Answer:

Q: How to use the analytical balance properly?

A: Analytical balances are designed to measure small quantities of mass. It has a glass chambered setup…

Q: What should we use d) To hold a very hot crucible: _________________ e) To hold test tubes so that…

A: (d) Crucible is an apparatus used to heat Chemical materials over burner or inside of over , where…

Q: How do I calculate the volume I recorded with a 10 mL pipet?

A: To calculate the volume of a pipet ,first we have to know the rules of pipetting to minimize the…

Q: Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct…

A: Chromatography is a technique used to seperate the mixture into individual components and to…

Q: Question 9 Which of the following is not a part of conventional UV/Vis. spectrophotometer? A…

A: UV/Vista spectrophotometer is used in UV/Vista spectroscopy.

Q: What would happen if the spotting line and positions were marked on the plate with a ballpoint pen?

A: The chemical compounds in a ballpoint are soluble in the solvent used for the chromatography.

Q: What is a blank and what is its purpose? Distinguish method blank, reagent blank, and field blank.

A:

Q: Determine if the following are systematic (instrumental, personal, method) or random errors. A. A…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Which is more accurate, a transfer pipet or a measuring pipet? What is theuncertainty in microliters…

A: A pipette is an apparatus which is utilized to measure out and deliver out a definite volume of…

Q: Discuss the importance of keeping a laboratory notebook (logbook).

A: Logbook is an important documentation of all the experimental progress in the lab in a systematic…

Q: What might happen if a student used a pen to mark the baseline on the chromatography paper?

A: Answer

Q: D Question 12 A cuvette placed in a spectrophotometer should be cleaned and conditioned O have…

A: Cuvettes are usually made with different materials mainly quartz, glass or plastic materials.