HW4 FunD

You continue with the Arrhenius Plot with the slope of the curve to be approximately -12,500 K and the Arrhenius factor of 4.367 E10 hours^-1. What is the shelf life of the drug at 22 C? What is the shelf life at 4 C? Did your coworker achieve a century shelf life in either storage condition? Be sure to show your calculations. Arrhenius Plot In (k) -8 -10 -12 -14 -16 -18 0.0026 0.0028 0.0030 1/T 0.0032 0.003

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.

Continued... 5. Answer ALL parts of this question The stability of chloramphenicol in eye drops is being studied at different temperatures and times. The concentration (in mg/L) of chloramphenicol at three different temperatures over time is provided below. Time (day) -18°C 25°C 40°C 25 28 23 7 27 20 20 30 20 21 20 180 23 25 19 (a) Using the data in the tables below assess and explain if the reaction time (after 1 hour of the start of the reaction) was an important factor affecting the yield of the reaction and provide the null hypothesis of the statistical test carried out. (b) The amount of chloramphenicol at -18 °C seems to vary with some values appearing to be higher than others. Explain what may be causing this variation AND suggest a methodology to identify if there was a systematic error in the measurement. ||

Adsorption exp erim ent Reaction between FeS and HCl: FeS+2HC1-FeCl2+H2S Reaction on filtration sheet: H2S+Pb(CH:Co0)2-PbS+2CH:COOH STEP1 Put some FeS particles into a big tube. Add1 or 2 mL of 18% HCl solution onto FeS particles. Immediately close the tube with Pb(NO3)2 or Pb(CH:COO)2 immersed filtration sheet. 1. Why filtration sheet turned black in step1? STEP2 Put some FeS particles into a big tube. Fix the "glass funnel" (glass pipette) to the tube after adding HCl solution. Close the outlet of funnel with Pb(NO3)2 or Pb(CH COO)2 immersed filtration sheet. 1. Why filtration sheet didn't turn black in step2 ?

Please upload your full solution to the following problem. For the experimental isotherm data given below, determine the Freundlich and Langmuir isotherm parameters. Apply linear regression to determine the isotherm parameters. A spreadsheet can be used for this purpose. Which of the two isotherms better describes the data? Experimental data: Carbon type: F-400 Carbon size: 200 × 400 . Chemical: Trichloroethene, C₂HCl3 (131.39 g/mol) Temperature: 13 C pH: 7.5-8 Equilibrium time: 31 days ● Ⓡ B B Sample number 123456 TCE Liquid-Phase Concentration CA. μmol/L 23.6 6.67 3.26 0.322 0.169 0.114 TCE Adsorbent-Phase Concentration 9A, μmol/g 737 450 318 121 85.2 75.8 2

I need the answer for this question as Sage Math Code. It's a linear algebra

Dear Bartleby, please help me.Do not use any software and please show complete steps for part b

In Experiment 4- Chemical Kinetics “The Rate of Chemical Reaction”, the following data were obtained:      Rxn Mixture     time(s)            temperature (˚C)      1                        190                  23.0      2                        378                  23.0      3                        97                    23.0      4                        205                  23.0      5                        44                    23.0      6                        90                    35.0 Concentrations and portions for reaction mixture number one: H2O 0.050 M Buffer 0.050 M KI (mL) 0.1% Starch (mL) 0.0450 MNa2S2O3(mL) 0.8525 M H202  (mL) 75.0mL 30.0mL 25.0 5.00 5.00 10.00 Use the data above to answer the following questions where applicable. (a) Write the formulas of the reactants, there are three, in the reaction being studied.Signs + or - or subscripts may be entered all on the same line; S2O32- can be entered as S2O3^2-, the symbol, ^,  is not required if the…

What happen to the glowing wood splint when it is inserted inside the test tube?

Q5: If the Ksp of Ca3N2 is 6.06 x 10-3, how many moles of calcium nitride (s) could you dissolve in 1.589 L of solvent (assume that calcium nitride (s) dissolves in water to form Ca2+(aq) and N3- (aq))? Enter your answer with at least 3 sig figs.    Please provide only typed answer solution no handwritten solution needed allowed

Pls help ASAP.

CHEM 330 Conferences 2. For the reaction: a) HBr(g) = H2(g) + Br2(g) HBr 1/2 (H₂)2 (Br₂)" HBr (H₂Br₂) ¹/2 b) 2HBr(g) H2(g) + Br2(g) boefficient H2(g) + Br2(g) theachartseefficient 2HBr(g) Kp = 3.5 x 104 at 1495 K. What is the value of Kp for the following reactions at 1495 K? c) H2(g) + Br2(g) = HBr(g) Kp = (Product) foe 5: Equilibrium HBr √ H₂ Br₂

A river water sample of 25°C is contaminated with diazepam with initial concentration of 5000 ppb (or ng/L) when it secondary biodegradation rate in water, Kd = 10^1.3 (cu cm/mol-sec) at 25°C and molar mass of diazepam is 284.7g/mol. What is the half life of the diazepam in hours? Note: I need right answer with clear calculations.

3. The value of "f" for the initiator efficiency in the equation below is usually between 0.3 and 0.8. Explain why it is less than unity. R₁ = 2fk [1] Where f= Initiator efficiency R₁ = Rate of initiation [I] = Initiator concentration

Show your work and explain please!!

Fast pls solve this question correctly in 5 min pls I will give u like for sure

Balance the following equation: C8H1803() + O2(g) H20(g) + CO2(g) Multiple Choice C3H1803() + 1302(g) 18H20(g) - 8CO2(g) C3H1803() + 1102(9) 9H20(g) - 8CO2(9) 2C8H1803() + 1702(g) 18H20(g) + 16CO2(g) 2:45 PM 11-Mar-22 asus COLLECTION prt sc delete (9 12/A & * bac 7. 8. 60

Firefox File Edit View History Bookmarks Tools Window Help my.CSMD.edu I Module 12 HW Chi wr NWP Assessme X De Module 9 HW Cha W NWP Assessment I Module 11 HW Che w NWP Assessment O 8 https://education.wiley.com/was/ui/v2/assessment-player/index.html?launchld=b0085ec6-77d3-4053-89d4-c26a8188beb3- E Module 12 HW Chapter 21 - Selected Exercises Question 5 of 8 -/1 E Starting with diethyl malonate, and using any other reagents of your choice, show how you would prepare the following compound: Fill 1) ? 2) ? Que Multi EtO 3)? 4) ? 5) ? Choose from the following list of reagents: OEt HO. Ques Multipa Questi A B D Multistep CH3Br LIAIH4 LDA NaOEt / EtOH Viewing Multipart Question E G H. Molecular Dra NaOH EtBr MgBr, H,O H20, heat heat Question 7 Multipart Question 8 Multistep MacBook Air esc F2 F3 F4 FS F10 @ 23 $ % & 1 2 3 4 7 8 W E R Y tab A S D F caps lock C V shift alt coms control option command

savvasrealize.com (M-F)-23-24 rk 3-D Assessment 1: Storylines 1 and 2 DUE Jun 1-1 In the lab, you conduct two experiments. For your first experiment, you are breaking down cane sugar (sucrose) into simpler compounds by boiling it. You write this equation: C12H22O11 A+B (breakdown) For your second experiment, you are determining suitable reagents for the complete oxidation of ethanol. You write this equation: C2H5OH C (oxidation) Periodic Table From your experiments, you found that A, B, and C share the same empirical formula. C has a different molar mass than A. Will A and C show the same chemical behavior? Explain. Χ Χ Ω ΧΟ BIV Progress C Desk 2 @ 12 -> #3 C $ 54 W e r % 95 DELL 66 Δ 0 7 29 & t y u 8 ** Question 28 of 40 Bad 0. 61 ) Jun 0 O P

Part 3: Effect of Temperature Table 3 Temperature C Time in seconds Rate [I2]/time Value of k 46.5 26sec (Using the values of the exponents x, y and z determined in Part 1, the above rate and the concentrations of the reactants for mixture I, determine the value of k at the temperature of the water bath.).Show calculation: 6 What effect did the increase in temperature have on the value of k? 7) Using the Arrhenius equation, determine the Ea in kJ/mol for the iodination of Acetone. In (k/ki) = (Ea÷R)(1/T1 – 1/T2) R = 8.314J/mol.K %3D Ea MU

The following results were found after completion of Part C in the Experimental procedure: 0.045 MI and 0.052 M H₂O₂ were used Calculated Rate of Reaction (M/s) 0.034 Run Catalyst 1 2 none 10.00mL of 0.5 M 0.826 FeCl2 Assuming the Rate Law = k[1][H₂O₂1² Calculate the value of k for run 2. Give your answer to the nearest whole number.

You have a treatment process in which a microbial population consumes a substrate (chemical A) according to Monod kinetics, with Hmax=2 d', Ks = 350 mg/L, and Y 0.15 g cells/g A. What biomass concentration (in mg/L) must be maintained to result in a substrate utilization rate of -1000 mg/L- hr for a concentration of A equal to 5000 mg/L? %3D %3!

E. Baking soda and vinegar Baking soda and vinegar reaction (sodium bicarbonate and acetic acid) TM THE STA OF N PURITY Sodium Bicarbonate HODCAS No 144- Pure Baking Soda America's 1 Trusted Baking Soda Brand Hundreds of uses like: Fresh Box fov Boking NET WT I LB. (454g) HAMMER ARM&

p.edu.jo/moodle/mod/quiz/attempt.php?attempt=10165&cmid3D21667 Fortal v أنظمة التعم الإلكترونی Old Courses Time left 0:59:08 A student dissolve 1.0 g of a mixture containing benzoic acid, p-methylaniline and cholobenzene in 20.0 mL of 10% HCL solution. After separating two layers, he added 10% red NaOH to the aqueos layer until basic to litmus paper. The Precipitate formed is: 1.00 on O a. chlorobenzene O b. p-methylaniline and benzoic acid O c. p-methylaniline Od benzoic acid NEXT PAGE Jump to.. Announcements ©PUELC. All rights reserved. EN INS DE %24 & V 8 9. BA Y I G Hi J J-K FI