Mixture Components: . . (1) ArCOOH, benzoic acid (2) ArOH, 2-naphthol... (3) Arc1, p-dichlorobenzene . DATA Mass of mixture used .MP: 123 C .MP: 123°C .MP: 53°C mg 15 . pka: 4.17 pka: 9.51
Q: Assume that you grow an alga like Chorella vulgaris in a bioreactor and extract that algal oil from…
A:
Q: Microsoft Edge X n%20kaur/Downloads/1015MSC%20T1%202022%20Lab%20Workbook.pdf + CD Page view A Read…
A:
Q: Draw one view of these four molecules and indicate the bond angles. Upload a photo of your drawing…
A: 1) 2)
Q: 4. If a given sample of silver and fluorine ideally combine to form 0.6mol of AgF, what is the…
A:
Q: Assume that you grow an alga like Chorella vulgaris in a bioreactor and extract that algal oil from…
A:
Q: When the vapor pressure of the compound below equals atmospheric pressure, which attractive force…
A: When methanol boils the attractive force that involved is-
Q: Raul law expressions and parameter description
A: Raoults law states that for any volatile substance the partial pressure is exerted by vapour or gas…
Q: 4. Tylenol also is an analgesic often taken by people allergic to aspirin. The active ingredient is…
A: The test for the presence of phenolic group is achieved by ferric chloride test. Phenol, or…
Q: 5.00 mL of 1.00 M HCl is added to a flask containing antacid powder dissolved in water. The solution…
A: Sodium hydroxide reacts with hydrochloric acid, to form sodium chloride and water. The equation for…
Q: Of the following compounds, rank each series by nucleophilicity using 1 for the most nucleophilic…
A: Following are important guidelines for deciding the nucleophilicity of nitrogen: 1) Nucleophilicity…
Q: a. Which is more stable; cis-1,3-dimethylcyclohexane or trans-1,3- dimethylcyclohexane? i. Draw…
A:
Q: CH3CH2OCH2CH3, is best classified as a
A: given CH3CH2OCH2CH3
Q: Many remote villages depend solely on wells to supply their drinking water. A ground water analyst…
A: we have to calculate volume of sample of well water
Q: 2. A liter of 0.1 N potassium permanganate contains A 2.63 g B. 3.16 g C. 7.90 g D 15.80 g E. None…
A: Normality is described as the number of gram or mole equivalents of solute present in one litre of a…
Q: For the data below, What is the Limit of Linearity based of the Linear Calibration Curve. Answer…
A:
Q: Consider the reaction. H CH3 C=C + H H Add curved arrows for the first step. CH₂ H H H-Br: ↑ H :Br:…
A:
Q: Calculate the pH for the following concentration: [H,0*] = 2.19 x 10-5 M A. pH=4.7 B. PH=4.9 C.…
A:
Q: Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 529.3 nm.
A: Given, Note: 1 nm = 10-9 m Wavelength (λ) = 529.3 nm = 529.3 × 10-9 m = 5.293 × 10-7 m Frequency (f)…
Q: NO₂ 1. Sn, HCI 2. NaNO2, HCI, 0%℃ 3. CUCN 4. H₂O*, A 5. a) SOCI2, b) NH₂CH3
A:
Q: 1. A. Complete/Completing analysis B. Trace analysis C. Proximate analysis D. Ultimate analysis 2.…
A: Few types of chemical analysis are given. In proximate analysis,technique used to analyse compound…
Q: Click the "draw structure" button to launch the drawing utility. Draw the structure of a molecule…
A:
Q: Order the following five elements by size where 1 is the smallest size and 5 is the largest size.…
A: When we go from left to right throughout a period, electrons are added to the existing…
Q: QI! what effect does the increase of pularity of the solvent have. rates in Solution? Q₂: What is…
A: polymerization, is the process in which relatively small molecules, called monomers, combine…
Q: 4000 100 8898 IR Spectrum (liquid film) 60 % of base peak 3000 800 V (cm¹) M Mass Spectrum CHyOz 80…
A: The DBE is double bond equivalent. It helps to get an idea about the number of possible double bond…
Q: Question 11 In 1835, S4N4 was first prepared via the reaction below. 6 S₂Cl2 + 16 NH3 SAN4 + S8+ 12…
A: Given : Mass of S2Cl2 = 1.0 kg = 1000 gm Mass of NH3 = 1.0 kg = 1000 gm
Q: After balancing the following redox half-reaction in the acid medium the coefficient of H* is MnO₂ →…
A: Balanced the given half reaction then determine the coefficient of H+ = ?
Q: Calculate the heat released when 65.5g of water at 55.5 ° C cools to ice at 0.0 ° C. (Given that the…
A: Here we are required to find the heat energy released during freezing process
Q: Explain ONE of the micro-extraction techniques based on the solid-phase. Your explanation should…
A:
Q: LWR # 1 Apply Stoichiometry A student performed an experiment to find the amount of sodium…
A:
Q: Click the "draw structure" button to launch the drawing utility. Draw the structure of a molecule…
A:
Q: At what pH range(s) will the two compounds be >90% in different layers?
A: find PH range
Q: Balance the reaction using method of half-reactions: Cr(OH)3(s) + ClO-(aq) → CrO42-(aq) + Cl2(g)
A: We consider reaction in Basic medium,so we add OH- for balancing
Q: You have 0.685 g of an unknown acid, H₂A, which reacts with NaOH according to the balanced equation…
A:
Q: Discuss the formation of alloys and its importance
A: Metals are compounds that can lose electrons and have high conductivity.
Q: 4. A solution is prepared by dissolving 171 g of CdCl2 in enough water to make exactly 250.0 mL of…
A:
Q: Given 500 kg/m3 H2SO4, what are the amounts of H2 and SO4?
A:
Q: A 2-pentanone acetophenone OH phenol OH 3-pentanol OH diphenylmethanol Butanal propiophenone…
A:
Q: 4. What was the molarity of a volumetric solution of disodium edetate if 28.50 mL of the solution…
A:
Q: Identify if the following system will form a buffer or not. a. HClO3 – NaClO3 b. HCOOH – Ca(HCOO)2
A:
Q: CH₂COOH(aq) is classified as a # acid. The reaction equation with water utilizes which of the…
A: A weak acid is that acid which do not undergo complete dissociation in water.
Q: What is the major product of the following reaction? WHY? NaOCH3 LOH -OH A) The seven-membered ring…
A: the five member ring will be form as a major product since it is energetically more favorable. we…
Q: pH regulation in cells The regulation of pH by cells is accomplished primarily through Multiple…
A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…
Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…
A:
Q: alcium bicarbonate uring the Antacids as Buffers simulation, it was found that calcium carbonate was…
A: Antacids are chemical compound that are used to neutralise the stomach acid.It helps to reduce…
Q: Br 1. 2. KOH (aq) NK
A: This is Gabriel phthalimide synthesis reaction. the negative charge of the nitrogen will attack to…
Q: 3. For a generic acid (HA) pK, = 6.3. In what form would the acid exist as primarily at pH 8? In…
A:
Q: Indicate the coordination number, geometry and the number of oxidation of the metal in each of the…
A:
Q: Write a summary of chromium in three sections (environmental occurrence, industrial production and…
A: Chromium Chromium is the 21st most abundant element in the Earth's crust. It is a transition metal…
Q: Calculate the mass in grams for 5.42 x 1022 molecules of propane gas (C3H8) at STP. (Given that…
A:
Q: An aquifer contaminated with petroleum is found to have the following component concentrations at a…
A: To provide an estimate for the age of the spill at this site using (a) BTEX ratio and (b) nC17:Pr…
A8
Step by step
Solved in 2 steps with 2 images
- Q) water hardness of each trial and average ppm with calculation, please. Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading 1.0ml 1.0ml 1.0ml Final Syringe Reading 0.88ml 0.84ml 0.85ml Volume of EDTA Consumed 0.12ml 0.16ml 0.15ml Water Hardness ppm CaCO3 Average ppmNo need guideline answer if u provide guideline answer I will dislike ok Module Code & Title: CHM9011M Chromatography and Sep Sciences Description of Assessment Task and Purpose: To prepare an SOP for the GC-MS Instrument3. a. Briefly explain why internal standardization method is useful inanalytical chemistry?b. Why does a response factor of an instrument’s detector need to becalculated?
- Thin‑layer chromatography (TLC) can be used as a preliminary identification method for many amphetamine‑type stimulants (ATS). Using a 0.25 mm thick silica gel stationary phase and a 98.5:1.5 methanol:concentrated ammonia mobile phase, a spot was observed to have traveled 3.52 cm when the solvent front traveled 8.81 cm. What is the retardation factor (?F)for the compound that composes this spot?Procedure: analytically transfer between 0.4053g of iron(III) chloride hexahydrate, FeCl 3•6 H2O (M = 270.2957g•mol-1), and dissolve in 5.5 mL distilled, deionized water. Support the tube on a stir plate and over a 15-minute period add, using the 10mL burette, 5mL of a nominal 600mM solution of 2,4 pentandione in methanol under constant stirring. To the resulting solution, add via a 10mL burette 3mL of a nominal 450mM sodium acetate solution stirring constantly. At this point, a red crystalline solid should begin to precipitate. Transfer and support the reaction vessel in the hot water bath and once the reaction mixture has reached a stable temperature in the desired range, maintain the reaction mixture at this temperature, under constant stirring, for a 15-minute period Initial weight of iron(III) chloride hexahydrate: 0.4053g The final weight of the reaction tris(acetylacetonate)iron(III): 19.6 mg 3. What is the charge on the metal in the starting material for your synthesized…A 5.00-mL sample of blood was treated with trichloroacetic acid to precipitate proteins. After centrifugation, the resulting solution was brought to pH 3 and extracted with two 5-mL portions of methyl isobutyl ketone containing the lead-complexing agent APCD. The extract was aspirated directly into an air/acetylene flame and yielded an absorbance of 0.527 at 283.3 nm. Five-milliliter aliquots of standard solutions containing 0.400 and 0.600 ppm of lead were treated in the same way and yielded absorbances of 0.396 and 0.599. Find the concentration of lead in the sample in ppm assuming that Beer’s law is followed.
- A 5.00-mL sample of blood was treated with trichloroacetic acid to precipitate proteins. After centrifugation, the resulting solution was brought to pH 3 and extracted with two 5-mL portions of methyl isobutyl ketone containing the lead-complexing agent APCD. The extract was aspirated directly into an air/acetylene flame and yielded an absorbance of 0.569 at 283.3 nm. Five-milliliter aliquots of standard solutions containing 0.400 and 0.600 ppm of lead were treated in the same way and yielded absorbances of 0.396 and 0.599. Please calculate the concentration of lead in the sample in ppm.Mass of crude Acetanilide = 0.508 Mass of filter paper = 0.800g Filter paper + pure Acetanilide = 1.153g Mass of pure Acetanilide = ? % recovery = ? Mpt of recrystallized Acetanilide =112 C – 114 C Mpt of crude Acetanilide = 97 C – 110 CWhat is ΔHsys for a reaction at 16.9 °C with ΔSsurr = -159 J mol-1 K-1 ? Express your answer in kJ mol-1 to at least two significant figures. (Please type answer no write by hend)
- A 0.0200 gram blood sample was decomposed by a microwave digestion technique followed by dilution to 100.0 mL in a volumetric flask. Aliquots of the sample solution were treated with a lead complexing reagent and water as follows: Solution 1: 10.0 ml blood sample + 20.0 mL complexing agent + 30.0 mL H20. Solution 2: 10.0 ml blood sample + 20.0 mL complexing agent + 26.0 mL H20 + 4.00 mL of 78 ppb Pb2+ standard. The resulting solutions were analyzed by UV/Vis at 375 nm. Absorbance for solution 1 = 0.155 and for solution 2 = 0.216. Calculate the concentration of lead (ppb) in the original sample.from this pfd of nitrobenzene production show material balance at mixing -the conversion is 99% and production 1000 ton/dayAs a newly appointed research officer, Marissa has been assigned a task to separate a mixture containing acetone, acetamide and 1,2-dichloroethane using a high-performance liquid chromatography (HPLC) technique. The instrument was equipped with a 40-cm column packed with cyano propyl bonded to the siloxane backbone material. i) List THREE (3) examples of mobile phase solvent/solvent systems that can be used with the column above. ii) Determine the sequence in which the three analytes eluted from the column and explain the underlying principle applied. iii) Sketch the chromatogram that would be produced if the column was replaced with a column filled with C18 hydrocarbon bound to the siloxane backbone material and acetonitrile was employed as the mobile phase. Label the peaks observed.