- A. В. C. D. Bunsen burner

Q: When heating a test tube: It can sit directly on the countertop to cool Never look directly into…

A: When heating the test tube we should have to take certain care , so there should be no damage in lab…

Q: Identify A to D (Hint: Work from backwards makes it easy)

A: As per guidelines first question is allowedto answer ,  please post rest of the question seperately…

Q: Need to find percent recovery of crude caffine and purified caffine

A: Given that -  Mass of Caffeine in tea bags = 550 mg  Mass of Crude Caffeine = 109 mg  Mass of…

Q: 3 lens

A: This is an example of photochemical reaction in presence of photosensitizer

Q: What are the limitation of the following tools? 1- Bore Hole Compensated 2- Density Tool 3- Nuclear…

A: Bore Hole Compensated tool is used for determining the time needed for compressional sound wave for…

Q: What is the main advantage of the ion sputtering method, compared to the inert-gas condensation…

A: Ion sputtering method and Inert gas condensation method are the techniques used for the synthesis of…

Q: What transitions between energy levels produces pinkish red colour in flame test for LiCl?

A: It is given that LiCl produces a pinkish red color in flame test.

Q: How can we reduce peak temperatures of the flame to reduce NOx formation?

A: One way of controlling NOx emissions is to use low-nitrogen fuels.

Q: When performing a flame test you are told that a rubidium solution will produce a violet color, but…

A:

Q: Use the data below to determine  your Unknown material. Data for all wet chemical tests and…

A: We can determine unknown material step by step which is given below.

Q: Observations on the Cu sheet immersed in the solution before reversing the reaction and after…

A: Interprretation -  To observe what happpens when Cu sheet immersed in the solution before reversing…

Q: type sensor includes SnO2 layer which changes its resistance with respect to reducing gas…

A: MOS sensors: They detect concentration of different types of gases by measuring the resistance…

Q: In SPME the sorbent coating is applied to this substrate: O Outer surface of a fiber O inner surface…

A: Answer_Unnumbered question: Solid phase micro extraction(SPME) technique that is used to extraction…

Q: 2.1 Draw a vacuum filtration setup and discuss possible advantages and disadvantages thereof.

A: Vacuum filtration is a more convenient technique and used mostly now-a-days in every laboratory.

Q: Briefly compare and contrast flash-photolysis with shock-tube method.

A: Flash-photolysis and shock-tube method are used to study kinetics of fast reactions.

Q: (a) What are the constituents of ‘copper matte’? (b) What is the role of depressant in froth…

A: a. The constituents of copper matte are  Cu2S and FeS

Q: Why is better sensitivity usually achieved using graphite furnace atomizatiorrather than flame…

A: Flame atomization: Flame atomization is an atomic absorption spectroscopic analytical technique that…

Q: 3 Original spots ber Original color Developed color Distance from Origir Red Red Yellow Yellow -24

A: Chromatography is an important biophysical technique that enables the separation, identification,…

Q: Lab. Report Experiment 4 Part A: Calibrating Pipette (PE) or Dropper; with petroleum ether

A: Part A: Drops of petroleum/2 ml of ether =average of the trials=drops in trial 1+drops in trial…

Q: How do you correct for an or angle flame in a Bunsen burner

A: 1. The height of the flame can be adjusted with the needle valve at the bottom of the burner.

Q: Read THREE (3) latest journal articles that discuss about polymer blend. List the articles using the…

A: 1) Reactive Compatibilization of PLA/PA11 Blends and Their Application in Additive Manufacturing.…

Q: Polarographic cells are used to measure the partial pressure of gases only in static gas monitoring…

A: Please see explanation

Q: Plz do it fast If this brine had a resistivity of 0.012 02-m at 68 F and the log measured…

A: The formula which is used to calculate the water saturation is shown below: Ir=ρωρs=Sω-n Here, Ir is…

Q: Draw an arrow pushing mechanisms for this

A: This is a primary amine and anhydride. When an anhydride reacts with primary amine it gives amide.…

Q: When pipetting, immerse the tip BELOW the meniscus making sure that the tip CONTACTS the container…

A:

Q: + Hz o >

A: Chlorine is a good leaving group and water is a good nucleophile. When chloride leaves the system, a…

Q: Give the reason why soot is present in the flame if the air holes are closed and absent if they are…

A: Answer - According to the question -   Soot is generally formed as an unwanted by-product of…

Q: State the factors affecting thermal stabilization giving a brief explanation on each factor and…

A: Thermal adjustment of soil is a ground improvement procedure. The idea, technique and utilizations…

Q: Please what's the observation for the combustion of flame test  Combustion: Flame test      1.…

A: The observation for the combustion of the flame test has to be given,

Q: Estimate a diameter of a 2 denier circular crossection fiber made of Nylon 6 (density = 1.14 g/cm3).…

A:

Q: Moving forward in different labs we will not be telling you what solution to prime your filter paper…

A: We know filter paper is used in separation techniques,  so there was some prime solution in…

Q: Which of the following characteristics is/are the advantage(s) of HPLC over GC? I. Only small…

A: HPLC is high performance liquid chromatography.and GC is gas chromatography.

Q: The impedance transformation equation for 3-winding IT.

A: The impendence binding energy formula shown below.

Q: GCMS is running at high temperatures to achieve compounds vaporization and separation. Describe why…

A: Interpretation-  To describe why  the transfer line temperature and filament are usually set similar…

Q: 8. The zero stability of vibrating condenser amplifier type pH meter is much better than direct…

A: True

Q: Use the dropdown menus to indicate the proper sequence of steps required in the use of a volumetric…

A: The proper sequence required in the use of a volumetric pipet is given by, Step-1: Rinse the pipet…

Q: A series circuit only has one path for electric current to follow. O True O False

A: Solution :      A circuit in electronics is defined as a closed path that allows the movement of…

Q: Between flame tests, the nichrome wire is cleaned. What color should appear when a properly cleaned…

A: Nichrome wire: It is the wire that is comprising of 20% Chromium and 80% Nickel. It appears…

Q: What is the dimension of a chlorine contact chamber if the CT value is 150 mg-min/L at the chlorine…

A: Given: CT value=150 mg-min/L Chlorine concentration=5 mg/L

Q: Describe how an ICP plasma torch (atomizer) operates, why it may be necessary to use one, and some…

A: ICP plasma torch consists of a mixture of gases which are electrically neutral (containing cations…

Q: In atomic spectroscopic techniques, flames and furnaces are commonly used to atomize the samples.…

A: In atomic spectroscopic techniques, flames and furnaces are commonly used to atomize the samples.…

Q: Table 2: Observations and Data Sheet for Part 2 of the Experiment Unknown Number: 19 Weight of empty…

A:

Q: What is the purpose of a guard column?

A: Two problems tend to shorten the lifetime of an analytical column. First, solutes binding…

Q: please

A: We will use stoichiometry of the reaction to get the answer.

Q: When checking the melting point of your impure sample, what temperature should you set as the…

A: Let's say the melting point of the pure sample is 'x0 C'

Q: carrying

A: Polystyrene is a polymer, which is formed from monomers of styrene and this type of polymer can't…

Q: Show the arrow push mechanism or the electron flow mechanism

A: We have given the organic reaction and we have to Show the arrow push mechanism or the electron flow…

Q: 5. Polarographic cells used for measuring the partial pressure of oxygen are temperature sensitive.

A: A polarographic cell is an electrochemical cell used to determine the concentration of analyte based…

Q: You want to make the bunsen flame spread more effectively, you'll use:  a. flask b. fish tail c.…

A: A flask is a glass beaker where the reacting samples are kept. A Fish Tail is a Laboratory apparatus…