A www-awn.aleks.comSignificant Figures CounterChapter 5. The Nervous System-Neurolo..https://learn-us-east-1-prod-fleet01-xyth...ALEKS Sabina Lamgadhey - LearnO CHEMICAL REACTIONSSolving for a reactant using a chemical equationAmmonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,0).What mass of nitric oxide is produced by the reaction of 2.65 g of oxygen gas?Be sure your answer has the correct number of significant digits.x10ExplanationCheck2020 McGraw-Hill Education. All Rights Re10MacBook AirII

Given: Mass of O2 = 2.65 g Molar mass of O2 = 32 g/mol Molar mass of nitric oxide (NO) = 30.01 g/mol…

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter11: Solving Equilibrium Problems For Complex Systems

Section: Chapter Questions

Problem 11.3QAP

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Many rivers are affectwd by illegal small scale mining. Study have revealed extremlly high deposite of heavy metals and particulate matters in rivers, making them unwholesome for drinking. With your knowledge in analytical seperation and analysis, .outline a suitable analytical protocol that can be employed to recover polluted water bodies and make them wholesome for drinking.
Chemistry An aquifer contaminated with petroleum is found to have the following component concentrations at a particular site: benzene158 ppm toluene124 ppm ethylbenzene91 ppm xylene45 ppm n-heptadecane161 ppm pristane 84 ppm Provide an estimate for the age of the spill at this site using (a) BTEX ratio and (b) nC17:Pr ratio. Show your calculations and use units throughout. Give proper s.f. for the answer.
If all other variables were kept constant, determine theeffect that the following errors would have on the calculatedpercent yield of the product. Would the yield be expected toincrease, decrease, or would there be no effect? Explainyour reasoning.– The product was insufficiently dried before weighing.– Some of the product was lost during the transfer fromthe Buchner funnel to the evaporating dish.– 7.5 mL of FeCl3 was added instead of 3.0 mL asoutlined in the procedure.– 4.587g of K2C2O4H2O was used instead of exactly4.000g .– The recrystallization step was skipped and theexperiment went straight to vacuum filtration.
An aqueous waste stream that has a maximum concentrationof 0.50 M H₂SO₄ (d=1.030 g/mL at 25C) will be neutralized by controlled addition of 40% caustic soda (NaOH; d=1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. However, a safety re-view finds that the waste stream could meet a small stream of animmiscible organic compound, which could form a flammable vapor in air at 40.°C. The maximum temperature of the causticsoda and the waste stream is 31°C. Could the temperature in-crease due to the heat of neutralization cause the vapor to ex-plode? Assume the specific heat capacity of each solution is 4.184 J/gK.
Please answer atleast 4 sub-parts. Thank you.
Here's the link https://www.youtube.com/watch?v=wY3ey4E-FRA
Potassium dichromate has several industrial applications. To determine the purity of the salt that will be used in different industrial processes, a sample mass equal to 2.660 g was dissolved and quantitatively transferred to a 500.00 mL flask. An aliquot of 25.00 mL of this solution was treated with excess KI and the released iodine was titrated with 0.1000 mol L-1 sodium thiosulfate, spending 27.00 mL. Calculate the purity of the analyzed salt. Data:K = 39.10 O = 16.00 Cr = 52.00 I = 126.9 S = 32.07
For the reduction 2FeCl3 + SnCl2 =====➔ 2 FeCl2 + SnCl4 in aqueous solution the following data were obtained at 25oC t(min) 1 3 7 11 40 Y 0.01434 0.02664 0.03612 0.04102 0.05058 Where y is the amount of FeCl3 reacted in moles per liter. The initial concentrations of SnCl3 and FeCl3 were respectively, 0.03125, 0.0625 moles/L. a.)Show that the reaction is third order (derive the rate law), and b.) calculate the average specific rate constant.
Airbag experiment The simulation link is provided below if needed. It's probably best to use the simulation because the pictures attached won't show everything in full. Simulation link: https://interactives.ck12.org/simulations/chemistry/decomposition-reaction/app/index.html?screen=sandbox&lang=en&referrer=ck12Launcher&backUrl=https://interactives.ck12.org/simulations/chemistry.html Just select ammonium nitrate and then select 1 mole and press play. Record macroscopic observations of the bag and the crash test dummy as well as microscopic observations of the particles within the steering mechanism and the inflated/inflating airbag.
Jansen Gas creates three types of aviation gasoline(avgas), labeled A, B, and C. It does this by blendingfour feedstocks: Alkylate; Catalytic CrackedGasoline; Straight Run Gasoline; and Isopentane.Jansen’s production manager, Dave Wagner, hascompiled the data on feedstocks and gas types inTables 4.6 and 4.7. Table 4.6 lists the availabilitiesand values of the feedstocks, as well as their keychemical properties, Reid vapor pressure, and octanerating. Table 4.7 lists the gallons required, theprices, and chemical requirements of the three gastypes. Table 4.6 Data on Feedstocks Feedstock Alkylate CCG SRG Isopentane Gallons available (1000s) 140 130 140 110 Value per gallon $4.50 $2.50 $2.25 $2.35 Reid vapor pressure 5 8 4 20 Octane (low TEL) 98 87 83 101 Octane (high TEL) 107 93 89 108 Table 4.7 Data on Gasoline Gasoline A B C Gallons required (1000s) 120 130 120 Price per gallon $3.00 $3.50 $4.00 Max Reid pressure 7 7 7 Min octane 90 97 100 TEL level Low High High Note that each feedstock…
Benzene is dissolved at a constant initial concentration of 350 mg/l and is contained within a landfill in leachate water above bottom liner of the landfill system. It starts to diffuse through the liner at time t = 0. Using Equation Ci (x,t) = Co erfc x/ 2(D*t)0.5 related narrative, and (error function table), calculate the concentration of benzene at its breakthrough location as it diffuses through a 1.5 meter thick liner (x=1.5 meters represents breakthrough location where liner fails of contaminant is released), after 50 years. Assume D = 10-5 m2/sec (diffusion coefficient in free standing water) and w = 0.7 (coefficient of tortuousity). Clearly present your assumptions and your value of erf, Select the answer range which best fits the answer you calculate. Group of answer choices 315 to 350 mg/l My answer is not in the range of any of the choices my answer. 215 to 314 mg/l 175 to 200 mg/l 370 to 400 mg/l
Airbag experiment The simulation link is provided below if needed. It's probably best to use the simulation because the pictures attached won't show everything in full. Simulation link: https://interactives.ck12.org/simulations/chemistry/decomposition-reaction/app/index.html?screen=sandbox&lang=en&referrer=ck12Launcher&backUrl=https://interactives.ck12.org/simulations/chemistry.html Just select ammonium nitrate and then select 2 moles and press play. Record macroscopic observations of the bag and the crash test dummy as well as microscopic observations of the particles within the steering mechanism and the inflated/inflating airbag.

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