Q: The vapour pressure of 2-propanol, C3 H8 O, is 50.00 kPa at 338.8°C, but it fell to 49.62 kPa when…
A: Given: Vapour pressure of 2-propanol = 50.00 kPa Vapour pressure of solution = 49.62 kPa Mass of…
Q: fön in a 25.00-mL sample was converted to dicyanoargentate (l) ion by the addition of a xcess…
A:
Q: Draw the product formed when oleic acid is hydrogenated. Pt H2 HO +
A: Here we have to write the product obtained when given unsaturated fatty acid is hydrogenated .
Q: Find the moles of 2-butanol that must be dissolved in 0.145 kg of ethanol in order to produce a 10.0…
A: Given : molal concentration of 2- butanol solution = 10.0 m Mass of ethanol (solvent) = 0.145 kg…
Q: Draw an electron pushing mechanism for proline racemization. Draw a reaction coordinate diagram of…
A:
Q: 1. Do all of the following for each molecule or ion. a. Draw the Lewis Dot structure that minimizes…
A:
Q: 1. A 15.00 g of NaCI is dissolved in 5.00 L of water. Find the molarity of the solution? Show your…
A:
Q: Provide the systematic name for the following benzene analogs and other aromatic compounds .
A:
Q: In the standardization of HCl using pure anhydrous sodium carbonate as primary standard for methyl…
A: Given : Volume of HCl = 1.0 ml Mass of Na2CO3 = 0.05 g Molar weight of Na2CO3 = 106
Q: 2. A sample iron ore weighing 0.6428 g is dissolved in acid, the iron is reduce to Fe2*, and the…
A:
Q: What is the link between IMFA strength and the physical properties of covalent molecules? Answer in…
A: The link between IMFA strength and the physical properties of covalent molecules.
Q: What types of covalent bonds are necessary for an intermolecular hydrogen bond to form?
A: Hydrogen bonding are not a permanent bond, its form due to electrostatic attraction between two…
Q: camparing vanious alkyl halides reactivity toward SN1 reactions using water as a nucleopnile Entry #…
A: Here we have to explain the better leaving group from the given experimental data of SN1 reaction in…
Q: 1. Balance the following equation using the smallest set of whole numbers: SO + LizSe SSe; + Li:0 ->…
A: 1) __SO2 + __Li2Se → __SSe2 + __Li2O
Q: theoretical yield
A:
Q: Consider the following gas-phase reaction: NO2(9) + N20(g)=3 NO(g) Using data from Appendix C of…
A: Given Reaction : NO2(g) + N2O(g) ⇌ 3NO (g)
Q: 3. What is the mass of a silver coin if 5.2 J is required to raise its temperature from 21.0 to 25.0…
A:
Q: The exact neutralization of 15.00 ml of 0.2500 M H,SOa (ag) requires 19.50 mL of the NaOH titrant.…
A: For this neutralization reaction, it is very important to properly balance the equation to solve…
Q: Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing…
A:
Q: Complete (if necessary) and balance the following equations, then use oxidation numbers to explain…
A:
Q: If 9.00 moles of NaCl are dissolved to make a 3.50L aqueous solution of sodium chloride, what is the…
A: Given:: Moles of NaCl = 9.00 moles Volume = 3.50 L Molarity = ?
Q: 1. Indicate whether E/Z 2. 3.
A: Here we have to write systematic i.e IUPAC name of the following given molecules.
Q: a). [HO*| and [OH] b). pH 6. Calculate the volume of 0.025 M HCIO4 solution that would just…
A: Given : 6. Concentration of HClO4 = 0.025 M Concentration of Ba(OH)2 = 0.0100 M Volume of…
Q: If you have 1 mol Xe and 1 mol F2; how many moles of XeF2 can you create in the following chemical…
A:
Q: prepare 0.1 M and 0.1 N solution of sodium thiosulphate in 100 ml of volumetric flask.
A: Molarity is the number of moles of solutes present in one liter of solution while normality is the…
Q: Supply the correct word/s that complete/s the sentence: “In distilling a mixture of two miscible…
A: Distillation is the process by which liquid mixtures are separated based on the difference in their…
Q: Chemistry Rank the following in order of decreasing rate of effusion. F2 SF6…
A: Given: F2 SF6 H2 CO
Q: 11. Which of the following options would student choose in order to prepare an unsaturated solution?…
A: 11.An unsaturated solution is a solution which has less than the maximum amount solute dissolved in…
Q: 9. What weight (in grams) of H,SO, would be needed t o be dissolved in 2.25 kg of 2.00m solution?
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: molality of a sc
A:
Q: Describe the preparationof 750 mLof a solution that is 0.0900 M in K + , starting with solid…
A: Given that - Volume of Solution containing K+ ions = 750 mL = 750/1000 = 0.750 L Molarity of this…
Q: basketball is inflated to a pressure of 1.75 atm in a garage at a temperature of 18.0°C. What will…
A:
Q: ne number of millimoles o
A:
Q: A limitation of the Friedel-Crafts alkylation reaction is that the presence of moderately/strongly…
A: Friedel-Crafts alkylation is a kind of electrophilic substitution reaction and in this kind of…
Q: 2. In a titration experiment, 50mL of HCI was needed to completely neutralize 20mL of 0.25 M NaOH.…
A:
Q: 3. How many grams of Na,HPO, must be added to a solution of 500 mL of 0.25 M NaH,PO, in prder to…
A:
Q: 1. A 1.000 g sample containing Na,C,O, (MM=134 mg/mmol) is titrated with 40.00 mL of 0.0200 M KMNO,…
A: It is an application of redox titration where a redox reaction occur between KMnO4 as titrant and…
Q: Give the clear handwritten answer .
A: Structure of Z-isomer can be drawn in the following way
Q: 2. Thirty-two joules of heat is added to a 255 gram iron bar How much will the iron bar's…
A:
Q: Sodium hydroxide reacts with sulphuric acid to produce Sodium sulphate and water. To complete the…
A:
Q: 4. Discussion: Type your answer to this question on a separate sheet and staple it to this report…
A: Here we have to explain why technical diethy ether containing some amount of ethanol can not be used…
Q: 2. How much (mass) carbon dioxide will be produced from the combustion of 40 grams of methane?. 3.…
A:
Q: Strike anywhere" matches contain P4S3, a compound that ignites when heated by friction. It reacts…
A: Given- P4S3(s)+8O2(g) ->P4O10(s)+3SO2(g) ∆H°reaction=-3677kJ ->Answer may differ slightly…
Q: a The first four steps in the radioactive decay sequence of Po-218 are a, B, a, B. To write the…
A: Alpha decay involve emission of alpha particle.Alpha particle has mass number 4 and atomic number 2.
Q: What is the concentration of the diluted glycerol solution if 30 mL of distilled water is added to…
A:
Q: 1. N-N-------N–N dispersion force dipole-dipole hydrogen bond O ion-dipole
A:
Q: mass
A:
Q: Calculate the number of moles of each ion present in each of the following solutions. Na+ ion in…
A: a) Na+ ion in 1.00 L of a 0.251 M Na2SO4 Given, Molarity of Na2SO4 solution = 0.251 M = 0.251 mol/L…
Q: Caction using 100%. water as the solvent nstead of S%. aqueous acetone?
A: Benzyl halides react via SN1 and SN2 with equal probability..unless the reaction conditions are…
Q: The distribution coefficient of hydrogen sulfide between benzene and water at 25 degrees Celsius is…
A:
What kind of samples can be analyzed by AFM? What are the applications of AFM?
Step by step
Solved in 2 steps
- Define Extraction in chemistry ?use analytical separation and analyses to outline analytical separation method protocols that can be employed to recover extremely high deposit of heavy metals and particulate matter in the river making wholesome for drinking in illegal mining communities .Table 2: Absorbance Values of Standards and Unknowns. Sample Blank Standard Solution 1 Standard Solution 2 Standard Solution 3 Standard Solution 4 Standard Solution 5 Water Sample 1 Water Sample 2 Phosphate Concentration (in ppm) Y17 0 ppm 0.02 ppm 0.04 ppm 0.08 ppm 0.16 ppm 0.32 ppm Freeman Lake 0.001 0.325 0.292 0.413 0.315 0.039 0.054 0.049 Absorbance at 2= 690 nm Calculations: 1. Construct a phosphate standard curve in Excel by plotting concentration (in ppm) on your x-axis and Absorbance (unitless) on your y-axis for your known solutions. Label the axes on the graph and provide the curve with a title. Use a linear trendline to generate a best fit line to your data. Label the graph with the equation and the R" value. Insert your labeled graph in the space below. X
- Explain the difference between random sampling and haphazard sampling as used in Analytical chemistry.What are the types of gravimetric methods? Give an examples where each method is used in an analysis. What is particulate gravimetry? When do we use this technique?Volatile and semi-volatile compounds can be analyzed by GC
- analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU) caffeine 1 1 4.67 302.85 aspartame 5 1 7.53 15.83 benzoic acid 1 1 8.14 89.98 saccharin 1 1 1.91 84.86 mixture(add everything above with 1:1:1:1 ratio) 1 4.47 69.58 How to get the concentration of the mixture in this case?What are the differences between systematic and random errors and how do they effect accuracy and precision? In what circumstances would you use standard addition (versus a normal calibration curve) to determine the amount of an analyte in a sample? A urine sample, containing analyte Z is analysed by the standard addition method where 5 mL of the original sample was mixed with increasing amounts of a Z standard and each solution diluted to a volume of 50 mL prior to analysis. A plot of the final concentration of the standard in each of the 50 mL samples (x axis) versus The measured signal from the analysis of each 50 mL sample (on y axis) produced a straight line with the general equation: y = 44.72x + 4.06 what was the final concentration of Z in the 50 mL standard addition sample? what was the initial concentration of Z in the original urine sample?The recommended air quality standard for Ozone (03) is as follows: a. Calculate this standard in ug / m3 at 1 atm pressure and 25 degrees celcius temperature. b. Calculate the ozone standard at an altitude of 830 mbar (1 bar = 0.987 atm) and a temperature of 15 degrees celcius. %3D 3. Assume that the exhaust gas from an automobile contains 1.0% carbon monoxide by volume. Calculate this concentration in mg / m3 at 25 degrees celcius and 1 atm. 4. Calculate the density of air in kg / m3 at STP (Standard Temperature and Pressure) conditions (0 deg celcius and 1 atm), assuming the composition of the atmosphere as 79% nitrogen (N2) and 21 percent oxygen (02) by volume.
- The researcher extracts a sample of well water and prepares it for TXRF analysis with a 10.00 mg/L V internal standard, like the calibration standards. The result produces SCa = 69297.81 and SV = 13481.2.Determine the concentration of Ca.The protein concentration of a protein isolate was determined using the Bradford assay. Five dilution of bovine serum albumin (BSA) were prepared from a 5.00 mg/mL BSA stock solution. To these dilutions, 100 µl of Bradford reagent were added. After 5 minutes, the absorbance was taken at 595 nm. Standard # BSA, in mg/mL Volume of Bradford reagent, A595 in mL 1 5.0 0.000 1.00 5.0 0.134 3 2.00 5.0 0.265 4 3.00 5.0 0.388 4.00 5.0 0.497 The supernatant dilution was prepared by mixing 49 µL of the protein isolate with 16 µL water. The absorbance was taken 5 minutes after addition of 100 mL Bradford reagent. Calculate the protein concentration (in mg/mL) of the original isolate if the absorbance at 595 nm was 0.413. Note: Final answer format must be x.xxx (three decimal places). Round off only in the final answer. Do not round off in the middle of calculation.Chemistry Whats the definition of transfer and persistence in forensic science with historical and recentliterature references