1- What is the definition of volatile matter? 2-What is the mobile phase in an experiment? a) lavender oil b) Lineave acetate c) lodine crystals d) dichloromethane
Q: 2. Explain how suction filtration is carried out in the laboratory. Give the important points that…
A: As per bartleby guidelines I answered only first question so please don't mind.Thanks in advance.
Q: QUESTION 5 er the hot filtration, the acetanilide is in the liquid in the beaker. True False
A: True After the hot filtration , the acetanilide is in the liquid, in the beaker.
Q: If the concentration of Cu 0.5-80 ppm What are the ranges for kg of Cu present per metric ton?
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Q: The percent of water in an unknown hydrated salt is to be determined by weighing a sample of the…
A: Hydrated salts are formed when some water molecules remain as part of the crystals after the…
Q: The thickness of the distance between any two marking on a buret is equivalent to about O 0.02 mL O…
A: The question is based on the concept of experimental Chemistry. we have to predict the distance…
Q: 0.4ml to minims
A: ml and minims are unit of Volume 1 ml = 16.2307 minims 0.4 ml =0.4 × 16.2307 minims0.4 ml =6.49228…
Q: When something cannot be directly obeserved, it can be represented by a Group of answer choices…
A: Model is defined as a specific implementation of a more general theoretical view
Q: A student is asked to prepare 45.0 mg of a sample to be used in a mixed melting point test. The…
A: Given, Mass of the sample needed to be prepared = 45.0 mg % of A in the sample = 65.0 % % of B in…
Q: Question 2 Which among the variables is NOT part of the distillation process? Polarity Vapor…
A:
Q: 4. Materials: Steel, Brass, Copper, Aluminum, Acrylic, Oak, Nylon, Pine, Poplar, PVC, Triple Beam…
A: Mass is 138 g Volume is 15.6 cc (as same volume of water will be displaced) So, density = M/V =…
Q: Nano chemistry questions! True or false? 1. Bulk materials have almost constant properties…
A: The solutions are given below -
Q: write T if underlined word iscorrect, write the correct answer if false 1. Graphene can be found…
A: The periodic table is defined as arrangement of the chemical elements in the form of a table. It has…
Q: Organic liquids are usually less dense than water. True False
A:
Q: Describe any visual differences between the hydrated sample and the dried, anhydrous form.
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Q: An endoscopic camera has a width of 1 mm. Complete each of the following equalities involving…
A: Conversion of one unit to another unit is done by multiplying or dividing that unit and it can…
Q: (d). 1. MgBr 1. O3 (2 equivalents) 2. Me,s 2. H20 K2Cr207 H2SO4 (2 equivalents)
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Q: What is a thin film?
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Q: Before slow cooking a meat (for example, in a crockpot/slow-cooker) you will often find instructions…
A: Searing meat is an step added if you want to make the most tasty steaks, chops, and more. While…
Q: Which diagram best represents a liquid–liquid emulsionsuch as milk? The colored balls represent…
A: Emulsion is a fine dispersion of droplets of one liquid into another liquid in which it is not…
Q: Directions Through the given situations below, answer the following questions 1 A mixture of…
A: Since you have posted multiple questions we will solve first question for you. If you want any…
Q: The ratio of a substances density to the density of a given reference material is known as it's…
A: The given options are as follows --- Option (A): ABV The term 'ABV' stands tor alcohol by volume. It…
Q: Cleaning PDB from the test tube after the experiment could be a long and arduous process. Describe…
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Q: If a small amount of impurity is present in a sample, what will be its effect on the melting point…
A: Types of impurities that can be present in the sample: Miscible impurity: Such impurity is soluble…
Q: 1. If the reference range for serum Ca is 8.5-10.5 mg/dL, would a result of 2.3 mmol/L be within…
A: Given that, in serum the concentration of Ca2+ ion is 2.3 mmol/L. The molecular mass of Ca is 40.08…
Q: Part D: Volatiles. A 1.232 gram sample of copper complex weighed 0.783 g after heating. What is the…
A: The formula for the percent of volatile for the solid material is given below, Percent of volatile…
Q: 200 180 160 140 120 100 40 20 PPM O (CDCL3)
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Q: What section of Quality control is very prone to cross contamination ang particulate matter…
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Q: A sample of liquid isopropyl alcohol is placed in a sealed container. Some of the volatile…
A: Evaporation is the process in which liquid compound is converted to gas phase.
Q: Can paper chromatographt be used to separate and identify very volatile substances? Explain.
A: Paper chromatography is a technique used to separate components based on the differential migration…
Q: 120- 90 60 30 Time (minutes) 90 What is the melting point of the following substances? Temperature…
A: The given plot is a phase transition curve of any sunstance which involve all the tree phases i.e,…
Q: 18. How would you best separate a mixture of volatile gases propane, butane, and Isopi C. Magnetic…
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Q: Which of the following statements is not true? a. It is okay to taste a chemical b. No food…
A: We should not taste chemical as chemicals may ingest in to body .And may be poisonous to our body.…
Q: 17.100 ml of 5:3:2 ethylene: chloroform: isoamyl alcohol 18. Convert 50 ppm to g/L 19. Convert 50…
A: 17.100 ml of 5:3:2 ethylene: chloroform: isoamyl alcohol Add 50ml ethylene + 30ml chloroform + 20ml…
Q: 1. Which of the following statements is TRUE regarding pasteurization? a. The sole objective of…
A: Answer is explained below. Pasteurization is a process by which heat is applied to food and…
Q: Part 2 Pour the six liquids (from part 1) into the same graduated cylinder (to the left). The…
A: Concept based on the density of different liquids.
Q: What states of matter present in t2-t3
A: Basically there are three states of matter present. They are: Solids Liquids Gases Solids are…
Q: . Explain the theory of emulsion.
A: Given emulsion We need to explain the theory of emulsion.
Q: Benzocaine 200 g Polyethylene glycol 400 600 g Polyethylene glycol 3350 ad 1000 g Polyethylene…
A: Bezocaine 200g Polyethylene glycol 400 600g Polethylene glycol 3350 1000g…
Q: Is 10 ppm 400% less than 50 ppm?
A:
Q: Why is the following considered a matter: a.) bubbles b.) smoke
A: Since we know that matter has three states: Solid Liquid Gas a.) And bubbles are gases enclosed…
Q: Match the four samples below, to their correct designation (either pure substances or mixures) v…
A: Concepts: a organic compound is pure in it has a only perticular enantiomer present. In there is…
Q: The main type of separation techniques are thickening (water removed from product),Evaporation…
A: Separation techniques are those techniques that can be used to separate two different states of…
Q: A student measured the melting point range of an unknown solid to be 81.9 to 82.3 degrees celsius.…
A: a) The range of melting point given is 81.9˚C to 82.3˚C. Since this range is very small (< 2˚C),…
Q: 1/ What is water Salinity? Where can you find the high salinity of ground water in Oman?
A: Since you have posted multiple questions, the answer for first question is given below. Kindly…
Q: When performing the water displacement method , this observation will increase the volume of the…
A: The correct answer is option a) bubbles are produced, because of the evolution of gas.
Q: 12. table sugar 13. grain alcohol 14.rubbing alcohol Isopropyl alcohol 15.nail polish C12H22011…
A: The solution of the question is given below:
Q: Which of these statements about suspensions is NOT true? O Over time, their particles will settle if…
A: Suspension is the mixture which is heterogeneous that contains large solute particles. And these…
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- Why do we not need "spitless" injection to measure the toluene content of gasoline using gas chromatography?4) If the classification of the chromatography run is a reverse-phase chromatography, discuss the relative polarities of caffeine, aspartame and benzoate.5) Given the data of the diet sodas, which one would you recommend to be the healthiest? (You may need to research the functions of caffeine, aspartame and benzoate. Please add references if necessary.)Iman has a mixture of two compounds A and B. A is a protein, and B is a lipid. He plans to separate the mixture using a column chromatography technique. He packed the column with amino bonded with siloxane material and use a mixture of 20:80 of water: hexane as the mobile phase. i) Sketch the apparatus set up for the chromatographic technique used by Iman. Use the correct chromatographic terminologies to label all of the apparatus, materials, and phases. ii) Predict the sequence of elution when the mixture was loaded onto the separation column. Justify your answer. iii) After the first compound was eluted, Iman discovered that the second compound was taking too long to pass through the column. Please suggest any strategies that could be used to aid the elution process.
- You were analyzing a mixture of volatile solvents using Gas Chromatography and found out that two peaks are unresolved (not well-separated) using your initial program. Which method can you use to obtain a chromatogram with well separated peaks?Two group of students wish to analyse caffeine content in tea samples. Group 1 performed the analysis using thin layer chromatography. Group 2 wish to conduct the analysis using analytical instrumentation. Suggest a possible analytical instrument method for Group 2.Briefly explain the procedural steps before instrumentation. List another two applications of this instrument.a) What would you see if you ran a Thin Layer Chromatography (TLC) on a mixture of the three solids shown below using silica gel as the stationary phase and ethyl acetate/hexanes as the mobile phase? Whichsolid would have the highest Rf and which would have the lowest Rf? Explain b) Would changing the mobile phase (from part a) and increasing thepolarity by introducing small amount of methanol to the mobile phase change the order ofRf of the above 3 compounds? Explain c) Another type of chromatography is Reverse Phase Chromatography. In this type ofchromatography, the stationary phase is non-polar and the mobile phase is polar. If astudent performed Reverse Phase TLC on the mixture of 3 solids (from part a),what would be the order of Rf’s of the compounds? Which would have the lowest Rf andwhich would have the highest Rf?
- 4. What factor allows molecules to be separated by chromatography?Qno1: why there is a need of chromatography and chromatography thecniqs. B) when and where we should use normal and reverse phase chromatography6. A certain mixture contains the following compounds: propionic acid, 2-hexanol, isoamyl acetate, and 3,4-dimethylheptane. Rank the compounds in the order of decreasing rate of elution using normal phase liquid chromatography. Explain your answer.
- 1a) Hexane, CH3(CH2)4CH3, is found to have a long retention time when separated from a mixture. A column with a C18 (18-carbon chain) stationary phase and a methanol-water modal phase is used for the separation. Explain why hexane has a long retention time. 1b)You wish to chromatographically seperate a mixtureof the follwing compunds. Which of the two compounds will be most difficult to seperatate from one another? Why?You are assigned to separate a mixture of colourless amino acids present in protein molecule, using chromatography technique. You have a chrome paper (Filter paper sheet), TLC plate, chrome tank or beaker, Solvent (Hexane) and the mixture of amino acids. Answer the following questions related to your experiment. (a). Which of the chromatography technique (paper or thin layer) will give better separation in this experiment?Use a suitable model to explain how separation and identification of a mixture of organic compounds can be achieved with a thin layer chromatographic (TLC) technique.