Q: . Find the molarity of the HNO3 solution and its absolute uncertainty.
A: As per the balanced chemical reaction, 2 mol of HNO3 reacts with 1 mol Na2CO3. Now, No of moles =…
Q: The pressure reads 10,800 Pa. Determine the altitude at standard atmosphere. SHOW THE COMPLETE…
A: Given, The pressure reads 10,800 Pa. Determine the altitude at standard atmosphere
Q: To transfer a solution, the stirring rod touches the delivery point of the reagent vessel and the…
A: Since you have posted multiple questions as per guidelines we can answer one . If you want remaining…
Q: Forty percent by volume of ethanol is processed to attain the 70% by volume concentration by…
A: Inflow rate = 4 L/min
Q: 0.119 (measured) 3) Molarity of final unknown solution (calculated from calibration curve) M.
A: The slope-intercept form of line is y = mx + c, here, m = slope of the line and c = y-intercept. The…
Q: 5. Density and Pressure increase as depth increases True False
A: Density of a substance is its mass per unit volume.
Q: If a non-polar mobile phase is used in a non-polar stationary phase, the polar components in a…
A: In the given question, the nature of chromatograpy is discussed based on the polarity concept of…
Q: A student wants to determine how different factors affect the rate of dissolving a solid in water.…
A: Given that, To determine the factors affecting the rate of dissolving a solid in water, a students…
Q: combination
A:
Q: Flowchart example of Recrystallization
A: Recrystallization is one of the methods used for the purification of a sample. The basic principle…
Q: Which of the following may cause tailing? I. Heavy spots II. Thick paper III. Volatile solvent…
A: Tailing is a phenomenon in thin layer chromatography, due to which different spots can not be…
Q: Prepare the following solutions: 100.0 mL 0.0500 M stock Ca2+ solution 50.0 mL 0.0050 M working…
A: Given data, Concentration of stock solution = 0.0500M Concentration of desired solution = 0.0050M…
Q: Solution is a Homogeneous mixture Select one: True False
A: Homogeneous mixture is defined as in which solute is mixed throughout the solvent and equally…
Q: For EACH type of gravimetric analysis: Give actual applications of each analysis. Include the…
A: Gravimetric analysis: It is a quantitative analytical method that is based upon the measurement of…
Q: Mg +2HCL > Mg cl2 +H2 If 1.505×10 exponent 23 particles of Mg react with 300ml 0.9mol.dm3 solutions…
A: Given data,Number of particles of Mg=1.505×1023Molarity of HCl=0.9mol/dm3Volume of…
Q: The primary standard substance must be less equivalent weight (or molecular Wt. ) False True
A: Primary standard substance are used to standardized the secondary materials or solutions which is…
Q: ppm used for very dilute solution True False
A:
Q: 7. The lower surface area provides a better surface contact with the solvent, facilitating faster…
A: The dissolution is defined as a process in which solute's molecules dissolved in the solvent. The…
Q: pure liqu PB liquid x solution B Esure solid x liquid x (saturate»
A: Phase diagram is a graphical representation of the physical states of a substance under different…
Q: During distillation, total vapor pressure of the boiling mixture is equal to the partial pressures…
A: Two immiscible liquids are present in mixture, the total vapor pressure of the mixture is equal to…
Q: 11.A Study of Intermolecular Forces of Attraction Anna Divi, a young and ambitious researcher, is…
A: Given: Break temperature = melting point = 54 oC Arrest temperature = freezing point = 51 oC
Q: Gas Chromatography can have which of the following stationery phases and/or mobile phases: O A…
A: In gas chromatography there are two phases , stationary phase and mobile phase . Mobile phase is…
Q: Pre-lab: Experiment 6 All Sections 1. Define the following terms: Surface tension Viscosity Freezing…
A:
Q: calculate the equivalent weight of KMnO4 in neutral medium.
A: The equivalent weight is given by
Q: Select all the statements below that are correct about Recrystallization O By dissolving both…
A: Recrystallization is defined as a process in which grains of a crystal structure come in a new…
Q: The purpose of adding sodium sulfate in the extraction is to decrease the solubility of caffeine in…
A: Solvent extraction or liquid-liquid extraction: The separation of compounds which are miscible in…
Q: Standardization of Sodium Thiosulfate Solution Primary Standard used: Potassium Dichromate…
A: The formula of potassium dichromate is K2Cr2O7
Q: In chemistry class, a student conducted an investigation about factors affecting the solubility of…
A: Trial 1 and Trial 2 are conducted at 25o C where as Trial 3 is conducted at 60oC.
Q: Calculate the gravimetric factor of: FeO in Fe2O3 Bi2S3 in BaSO4 BaSO4 in (NH4)2SO4…
A: Gravimetric factor is conversion of gm Of compound into gram of single element. It is the ratio of…
Q: 5- Vacuum fractional distillation of crude oil, when performed, allows the distillation of the most…
A: Hii there, As there are multiple question posted. we are answering first question. If you need…
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: A student wants to determine how different factors affect the rate of dissolving a solid in water.…
A: With increasing in temperature, particles are dissolved more rapidly due breaking of solute-solute…
Q: Peak area proportional to mass or concentration of the individual components of the sample injected.…
A:
Q: Peak area proportional to mass or concentration of the individual components of the sample injected.…
A: The area under the peak is a function of that compound's concentration in the sample.
Q: What is the level of the liquid in the gatuted oede Volume mL. 70 60
A: Everything that has and occupies space is called matter. Solids, liquids, gases are the three states…
Q: n molar mass of a solid experiment, the mass of the cyclohexane’s solvent should not be determined…
A: in molar mass of solid experiment we can calculate freezing point and molecular weight but…
Q: If the true melting point for lauric acid is 43.2 oC what is the percent error?
A:
Q: How to increase storage and shelf life of ready to drink bottled sorghum porridge using stabilizers…
A: Polyethylene Terephthalates is one of the major that is used to increase the shelf life. UV rays it…
Q: Types of volumetric analysis are. * Three. Five. O Four.
A: Titration can be defined as the process of determining the concentration of an analyte by adding…
Q: Initial Reading of NaOH (mL) Final Reading of NaOH (mL) Trial # Mass of Volume of NaOH KHC,H,O, (g)…
A: Data given: Mass of KHC8H4O4 = 0.40 g Volume of NaOH = 13.06 mL = 0.01306 L (1L = 1000 mL)
Q: The lower surface area provides a better surface contact with the solvent, facilitating faster…
A: In the given question, two statements are given and it is asked whether these statements are true or…
Q: Goal: You are tasked to film your designed simple investigation determining the effect of…
A: Okie so what can you to is take 1)Two things will you , two big bowls. 2) one will have normal water…
Q: Identify whenther the statement are TRUE or FALSE 1. Sedimentation time of a given particle will be…
A:
Q: Volatile and semi-volatile compounds can be analyzed by GC
A:
Q: What is the fundamental difference between gravimetric and volumetric analysis? Use the editor to…
A: The difference between gravimetric and volumetric Analysis is given below ----
Q: One of the most important applications of ion exchange is the separation of large molecules from…
A: Anions are negatively charged and cations are positively charged.
Q: Which of the following describes a gradient elution process? O stationary phase has varying…
A: We have to describe a gradient elution process. We know that in a gradient elution process, the…
Q: B. Same as Part A, but three determinations are made: Sample 1 Sample 2 Sample 3 mass of sample…
A: B. Given that : Sample 1 Sample 2 Sample 3 Mass of sample 0.4892 g 0.3981 g 0.3429 g Mass…
Q: Does it possible to use gravimetric analysis to quantiify certain parameters as indicators of…
A:
Q: What are the steps in diluting high concentration of stock solutions into lower concentration…
A: During dilution, concentration changes but no of moles remain same. So, M1V1 = M2V2 Let-…
Step by step
Solved in 2 steps
- Si crystalizes into a diamond crystal structure with lattice constant a = 0.543\: nma=0.543nm. Calculate the atomic density in units of cm^{-3}cm−3. Values within 5% error will be considered correct.For a successful crystallization the following conditions are desired? Agitated vessel O Cold solvent O Stationary (still) vessel O Slow crystal growth Warm solvent Fast solid formation (precipitation)Q3/ Caleulate the solubility parameter for amorphous polylactie acid, which has a density of 1.21g/cm3. Also, identify the best solvent for molecular weight determination. Explain your reasoning. Note that the density for acetone, ethyl acetate, and tetrahydrofuran are 0.791,0.902, and 0.889 g/cm3, repsectivily. Note H-1 g/mole, C-12 g/mole, N-14 g/mole, and 0-16 g/mole. CH3 -H polylactic acid (C3H402)n но Aceton:C3H60 ethyl acetate :C4H8O2 tetrahydrofuran :C4H80 人人 Group Molar Attraction Constant Fin (MPa) cm' mol -CH, 420 --CH, - 280 >CH- 140 >C< 0. P-phenylene 1377 -0- 256 -CO- 685 -COO 512
- Discuss the solubility behaviour of polymers from a thermodynamic point of view. What is the influence of the molecular weight on the solubility? Discuss the two main mechanisms of phase separation in a macromolecular solution. Give a connection to thermodynamics. Discuss in own words extended chain and end-to-end distance for a polymer.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(b) TABLE 3 shows data phase equilibrium diagram for carbon dioxide. TABLE 3 Pressure (atm) Temperature (°C) Triple point Critical point 5.2 -57 73 31 (i) Sketch a phase diagram for carbon dioxide (ii) Explain the phase changes that could possibly occur when a sample of carbon dioxide in a closed vessel under 1 atm pressure and a temperature of -78°C is pressurised isothermally to 10atm, followed by isobaric heating to 20°C.
- Define the relative amounts of liquid and vapor phases in a saturated mixtureare specified by the quality x.Proposed a laboratory procedures on how to determine polymer molecular weight based on osmotic pressure and dilute solution viscosity measurements.What limitations are encountered in the apolication of sublimation as a general method of purification?
- Determine the number of phases, components, and the variance (degrees of freedom) for the following: (a) A solution made from water, MgCl2 and KBr. (b) A solid mixture containing powdered graphite and powdered diamond. (c) A gaseous mixture containing water and carbon dioxide that was produced from the combustion of a stoichiometric mixture of oxygen and propane gases. Assume the reaction went to completion and there are no residual amounts of propane nor oxygen present. (d) A system containing PCl5(g), PCl3(g) and Cl2(g) in equilibrium. (e) Oxygen gas and hydrogen gas in equilibrium with liquid water.Calculate the lattic parameter for LiF given that the molecular mass is 25.94 g/mol and the density is 2.602 g/cm^2.If mass of BCC Leaad Pb=207 g/ mol, and lattice parameter (a) =3.9211×10-8 cm,calculate the (الكثافه المثاليه ) perfect density of Pb //p^:-1