Q: Would it be reasonable to store the standardized KMnO4 solution in a screw- cap bottle, if the cap…
A: Answer - According to the question - Given - KMnO4 is not a primary standard and is standardized…
Q: does melting point determination remove impurites in crude protein?
A: Concept- Melting point is the temperature at which solid will convert into liquid. Because it is a…
Q: cific method for t
A: The process of printing technique where mesh used to transfer dye into substrate called screen or…
Q: Syneresis is a process by which there is the loss of water trapped within the gel matrix through the…
A: Syneresis is process of extraction of water .
Q: .is a method that can be ........ regarded as a top-down approach for nanomaterial production. * O…
A:
Q: True or false. A primary standard solid must be weighed accurately and diluted to an accurately…
A: Analytical chemistry.
Q: When checking the melting point of your impure sample, what temperature should you set as the…
A: In the event that the inexact temperature at which your sample should melt is known, the sample can…
Q: In paper chromatography, the stationary phase is made of ---------- and the mobile phae is made of…
A: A paper chromatography variant, two-dimensional chromatography involves using two solvents and…
Q: A cylindrical core has a bulk volume of 25.8 cm3 and an effective pore volume = 1.4 cm3 The pore…
A:
Q: Determine the moisture content of the crystalline solid that weighs 4.8756g after staying in the…
A: In the given question we have to calculate the moisture content in the solid. given data: wet…
Q: A cellulose sponge, 7.0c
A: 1. Volume of sponge (V) = Thickness (T) x Width (W) x Length (L)…
Q: Can you describe the main pathways (ingredient class or method) for modifying the rheological…
A: Answer - Cleansing agents remove contaminants from a substrate, be it hair or skin. Cleansers used…
Q: Relative amounts of fluid given off and reabsorbed by a model capillary, and what compensates for…
A: Along with oxygen transport, blood also helps in the transport of nutrients, wastes and other…
Q: Why acetone has les retention time and toluene has more. discus about polarity of 3 samples and…
A: Retention time is the time how long the compound is inside the Column .Depending on the polarity of…
Q: Would coat the paper with a nanoparticle offers any advantage? If yes, what could be the drawback of…
A: A nanoparticle, also known as an ultrafine particle, is a matter particle with a diameter of 1 to…
Q: For full contact with the acid, nitrile gloves with at least 0.4 mm thickness are required. The…
A: In order to protect the hands from the acids, it is given that the thickness of the gloves must be…
Q: This is the laboratory apparatus used for liquid-liquid extraction. Florence flask Volumetric flask…
A: For liquid liquid extraction is extraction of a particular compund from a solution with the help of…
Q: growth if no crystals are forming upon a. scratch air-liquid interface on flask with a glass rod or…
A: Interpretation : We have to tell the way by which crystals can grow.
Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…
A: Recrystallization is an experimental technique of separating pure compound from the solution…
Q: 7.25 The lower yield point for an iron that has an average grain diameter of 1 x 10-2 mm is 230 MPa…
A: In this case, the grain diameter at which the lower yield point will be 310 MPa needs to be…
Q: Give at least five factors to consider when performing chromatography (paper, thin-layer, liquid,…
A: Chromatography is a technique that is used for the separation of components of a mixture. The…
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: Write the dispersed phase and dispersion medium of paints.
A: Colloidal solution contains two phase: dispersed phase and dispersion medium.
Q: List out merits and demerits of any one technique under top down and bottom up to synthesize carbon…
A:
Q: 7) Describe how to prepare a dried sample fit for melting point analysis.
A:
Q: 24 The volume tric Karl Fischer method is suitable for samples with a high water content. 7…
A: THE ANSWERS ARE :- (36) TRUE. (37) FALSE. (38) TRUE . (39)…
Q: What type of elution uses different proportions of solvent during separation process?
A: Elution is a process of separating one from a mixture by using eluent or solvent. By solvent…
Q: The pellicular type packing material in HPLC .a O has lower sample capacity than porous material .b…
A: We know that, in HPLC (High Performance Liquid Chromatography), the HPLC columns are usually packed…
Q: In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its…
A: In recrystallization, an impure solid compound is mixed with hot solvent to form a saturated…
Q: how to use Gas Chromatography in Cosmetics Provide a procedure on how to do this example that you…
A: Principle of Gas Chromatography :- Gas chromatography differs from other forms of chromatography in…
Q: Which of the glove materials listed in this study meet the standard guidelines set by OSHA for…
A: The dissolution of a specific mass of a solute to a specified volume of solvent provides the…
Q: dipole dipole interaction between aspirin and silica explanation pls and steps also
A: Dipole Dipole interaction occurs when molecule have atoms which are different in…
Q: Which of the following statements about the mobile phase in Supercritical fluid chromatography (SFC)…
A: Gas chromatography is a type of chromatography used in analytical chemistry used for separating and…
Q: Carbon nanotubes can be produced by ..method * chemical vapor deposition Sol-Gel physical vapor…
A:
Q: TRUE OR FALSE Powders that have low density and high porosity are free flowing. Surface roughness…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: Which is the most appropriate way to dispense liquid using a dropper (vertical, 45° angle, or…
A: Dropper is a device used to transfer small quantities of liquids.
Q: Field Capacity is a moisture state where all of the pore spaces are filled with water. true or…
A: Field capacity is defined as the amount of soil content or water content present in the soil after…
Q: Criticize the following techniques:a. A 100-mL graduated cylinder is used to measure accurately a…
A: Measurement of volume and weight plays a very important role in performing chemical reactions in a…
Q: The most useful bonded-phase coatings in HPLC are . ...... a) glass b) alumina c) inert silica d)…
A: HPLC is High-Performance Liquid Chromatography. It is a technique that is used to separate and…
Q: Table 2: Observations and Data Sheet for Part 2 of the Experiment Unknown Number: 19 Weight of empty…
A:
Q: What is the difference between gel filtration and gel permeation?
A: Gel Filtration Chromatography is a technique which use to sperate out the molecules by there the…
Q: How to get maximum % recovery from recrystallization and crude weight
A:
Q: Draw the main components that will be present in any HPLC and GC instrument respectively.
A: The five major HPLC components and their functions The Pump: The role of the pump is to propel…
Q: 1. Why do certain components move further on the stationary phase than others? 2. Why was it…
A: 1. Why do certain components move further on the stationary phase than others? Size of the…
Q: Given: Fresh Mass of soil (FM) = 100 grams; %Moisture Content (MC) = 8%; Bulk Volume (Vb) = 95 cm3.…
A:
Mention the relative sizes of hard gelatin capsule with their corresponding volume and fill weight at 0.6g/cm3 powder density
Step by step
Solved in 2 steps
- Can you describe the main pathways (ingredient class or method) for modifying the rheological properties and adding viscosity / yield to a surfactant cleansing system (shampoo)? What would you be doing to the micelle and why would it thicken?Enumerate and briefly discuss the quality control tests performed to determine the properties of the compressed tablets.How does PEG / PPG Dimethicone (below) differ from a regular linear Dimethicone. What characteristics would it add to a silicone material and what would its usage be in a formula?
- Cite evidence from the images.True False Granules may be swallowed, dispersed in food, or dissolved in water. Granules are usually less stable to the effects of atmospheric humidity. An effervescent dosage form is dissolved or dispersed in water to initiate the effervescence prior to ingestion A waxed paper is preferred for deliquescent powders. The selection of the type of paper is based primarily on the nature of the powder. Eutectic mixtures are advised to use double wrap papers. Large particles that are denser tend to settle more rapidly than do small particles. denser tene to settle more rapidly than do small particles Hygroscopic powders will absorb moisture from the air Powders of small particle size present a lesser surface area to the atmosphere.Phase change properties of pure substances Cu C6H12 C (C6H5CH₂)₂0 (CH3CH₂)20 CH3CH₂OH (CH₂OH)2 NH₂COH Au C C6H14 H₂ copper cyclohexane diamond dibenzyl ether diethyl ether ethanol ethylene glycol formamide gold graphite hexane hydrogen 1084.62 6.7 4440 1.8 -116.22 -114.14 -13.0 2.57 1064.18 4489 -95.27 -259.16 2560 80.7 298 34.4 78.24 197.5 217 2836 3825 68.72 -252.879 0.385 1.841 0.51 2.369 2.438 2.394 2.389 0.129 0.709 2.27 14.304 13.26 2.68 -- 7.19 4.931 9.96 8.44 12.55 117.4 13.08 0.12 29.97 45.6 26.52 38.56 50.5 60.2 324 28.85 0.9 280.3 193.7 242 446 -- 234.4 -240.212 40.2 35.9 61.7 80 29.9 12.69
- Explain how molecular weight of a polymer can be determined by diluteviscosity measurements?The formula for 1000 g of polyethylene glycol ointment calls for 600 g polyethylene glycol 400. At $ 19.15 per pint, what is the cost of the polyethylene glycol 400, specific gravity 1.140 , needed to prepare 4000 g of ointment?is the study of fundamental principles of nanostructures between bulk and atomic properties.
- From the practical standpoint, is it better to use a "good" solvent or a "poor" solvent when measuring polymer molecular weight? Explain.Would a thermoset polymer exhibit much plastic strain? Explain why or why not in 1-3 bullets.Ceramics used as abrasives must be hard and tough and be able to withstand high temperatures that arise from frictional forces. What is the minimum required hardness (measure in Mohs scale) for a material to be used as abrasive? Your answer