Chemistry Questions and Answers June 18, 2020

Determine if the following statement is always true, sometimes true, or never true Substance A has a larger specific heat capacity than Substance B. If 10.0 kJ of heat is added to 50.0 grams of each of the two substances, Substance A will have a greater change in temperature than Substance B. O Always true O Sometimes true O Never true

Calculate charged and uncharged ration of weak acid and weak base drug under normal and basic urine pH. What is the effect of urine alkalinization on drug absorptionelimination What will be the effect for acidic urine Name 2 agents used to make urine acidicbasic. Weak Acid (pKa 6.0) Weak Base (pKa 7.0) HA A NH, NH3 3 (1) Normal urine, pH 6.0

1- While drilling with a water base mud with the density of 10 PPG we face with the following conditions: - Actual equivalent pore pressure is 9 PPG and equivalent fracture pressure is 14 PPG. -There is a thick and highly reactive shale formation ahead and you want to drill through using the current mud. -Actual equivalent pore pressure is 11 PPG

Given the following data for the XRD of a certain soil. State all the possible clay minerals could be found (2 Points) Saturation salvation, heat Mg, 25C MgGlycerol K, 25C K, 300C K. 550 C Layer distance (nm) 0.7, 1.0, 1.4 0.7, 1.0, 1.4 0.7.1.0, 1.4 0.7. 1.0 1.0.

Propose a synthesis for this molecule using simple organic chemistry reactions such as sandmyer reactions, EAS, frields, ect. start from each of the 5 rings and show the proper EAS mechanism and then how the rings are joined together. ( do not have to make the benzene ring just show how the proper functional have been added) ?

NH og HN

4. Derive the following equation for an unsteady molecular diffusion through two opposite surfaces of a slab What is the difference if diffusion occurs just through a single surface of the slab

Figure 1.1 and 1.2 show the capacitive current for two different electrodes. Discuss the factors give rise to the differences seen for the two electrodes. ,Figure 1.1 Cottrell experiment in KCI solution with a Pt disc electrode (d 2 mm) Capacitive Current 0 KCI 20 40 60 80 100 120 Times CurrentuA ,Figure 1.2 Cottrell experiment in KCI solution

3 When 2butyne reacts with aqueous H2SO4 in the presence of HgSO4, the major product is (1 Point) Aldehyde Ketone Alcohol Carboxylic acid None of the above

Complete the following reaction and write the IUPAC names of the two products. CH3 0 heat H20 HC1 CH3CHCH,NH, 2methylpropanoic acid ammonium chloride

The various types of greases used for lubrication are a. b. C. O d. aluminium soap greases sodium soap greases calcium soap greases all the above

In order for microbiological growths to thrive in a fuel tank it is necessary for a. low temperatures to exist O b. vanadium to be present moisture or water to be present O d. electrolysis to be occurring

Which chemical is most often utilized to prevent and correct most microbial contamination occurring within fuel storage systems a. Paraffin waxes O b. Biocides . Sodium chlorides O d. Potassium salts

A 0.239 M solution of H,SO, was used to titrate 10.00 ml. of NaOH 16.70 ml of acid was required to neutralize the basic solution What was the molarity of the base (OH molL

1. Calculate [HIn] and [In-] for your solutions by solving the pair of simultaneous equations by hand. Show your calculation for one of your unknown solutions below. eA 445nm= 20304. 35 L/ mol*cm eA 615mn= 260.87 L/ mol*cm eB 445nm= 2608.7 L/ mol*cm eB 615mn= 50304.3 L/ mol*cm Unknown 1 absorbance for 445 nm: 0.203 au Unknown 1 absorbance for 615

2. a) Material and energy balance results corresponding to the PFD Use handcalculation methods and your own unique set of conditions (see Design Specifications). You may not use a dedicated programme such as HYSYS, except for the sole purpose of obtaining property data, but this must always be substantiated by data from other sources. Prepare

Identify which combinations of solvents will be the aqueous layer?

identifa which ambina tang of Solvents will be the aqueony lager Salublh taing parnt Solvent Jensity exglacetate 77 09 dethylether 35 0.71 low petroleun efher 3560 0.64 dizhbaamethne 2 40 1.34 lo0 unter 1.00 Hekanes 002 6870 0.66

Moles of Zn(NO3)2 in 143.50 g of this substance ?

a) Calculate the decomposition temperature of ABO3 under 1 atm pressure and 25BO2 and 75N2 gas mixture conditions. b) Does calcination reaction start at 1250 K under 2 atm BO2 pressure ABO3(s) AO(s) BO2(g) AG 5040 T (2981400K)

2. a) What do you understand by homolytic and heterolytic bond cleavage Show the reaction mechanism of monobromination of ethane. b) Alkanes show regular increase in boiling points with the increase of carbon numbers and while it decreases with the branching. Why is so c) Water has pKa15.74, and acetylene has pKa25. Which is the stronger acid

An antihistamine has an noctanolwater partition coefficient of 1,899 and a pka of 8.0. i. What is the logP value. Is the antihistamine lipophilic or hydrophilic Give reasons for your answer.

An antihistamine has an noctanolwater partition coefficient of 1,899 and a pka of 8.0. i. What is the logP value. Is the antihistamine lipophilic or hydrophilic Give reasons for your answer. ii. Will the antihistamine be more ionised at pH 2 or pH 7 Calculate the fraction ionised at each of these pH values. Show all calculations. iii. At what pH

The left halfcell was loaded with 18.0 mL of Br, (1) (density 3.12 gmL). The aluminum electrode contains 13.8 g of Al. Which element, Br, or Al, is the limiting reagent (That is, which reagent will be used up first) Al Br, If the cell is somehow operated under conditions in which it produces a constant voltage of 1.50 V, how much electrical work

(b) The following molecules have been designed to have activity at acetylcholine receptors. With the aid of diagrams, discuss their structures and predict which type of receptor each molecule interacts with and the type of action each molecule will exhibit. Explain your reasoning. IN H2N 1 2 4 3.

Refer to the following phase diagram (not to scale) for hydrogen 12.8 1.00 atm 0.071 13.9 14.0 20.3 33.2 T Kolvin At a pressure of 1 atm, the temperature 14 K is called the The normal boiling point for H2 is at The triple point pressure for H2 is K atm The critical pressure for H2 is 12.8 atm At temperatures above 33.2 K and pressures above ,T

Enter 10VA into the PDB ID box. This is the entry in the Protein Data Bank for ovalbumin structure. Enter A for the chain. Leave the version at 1.1. Run the tool. Paste the output here. What is your interpretation Does it concur with what you found using the HoppWoods tool Why or why not Disco Tope Structure baned antibody prediction. D er ton DA

A sample contains the following compounds: phenol, lauric acid, acetic acid, diethyl ether. Sketch the theoretical chromatogram of this sample and provide a discussion of your chromatogram

i. For the reaction below add curly arrows and formal charges to complete the mechanism. Note you do not have to indicate partial charges. 3 marks Your current response is Br Br BrBr Br Br ,i. A new octahedral complex was prepared and consisted of a different metal ion from the firstrow transition metals and 6 aqua ligands. The spin only magnetic

In a 100 mL solution containing S2- ions, a selective electrode is introduced that adopts a potential of -845 mV against ENH. After the addition of 1.00 mL of 0.1 M AgNO3, the electrode acquires a potential of -839 mV. What is the concentration of sulfide ions? Notes: Sulfide in the presence of silver precipitates. Two moles of silver react with

Steam reforming of methane ( CH, ) produces synthesis gas, a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. An industrial chemist studying this reaction fills a 2.0 L flask with 2.1 atm of methane gas and 0.74 atm of water vapor, and when the mixture has come to

Which one of the following titration experiments would work best using Methyl Red as an indicator Methyl Red appears red when the pH is below 4.4, and yellow when the pH is above 6.2. O CF3COOH titrated with HI O.CH3CH2NH2 titrated with HBr Ba(OH)2 titrated with HCI CH3COOH titrated with NaOH HNO3 titrated with KOH

The maximum radial probability distribution for a H atom in the 2p state is O a, 3 O a, 6 O a, 5 a, 4 O a, 2

a student records a refractive index of 1.4712 at 18.5 degress for their initial acetone/toluene mixture. assume student x performed fractional distillation on 50 mL of this mixture and graphed their results. at which volume of their distilled would student expect to see a rapid increase in the distillation temperature?

A student records of 1.4712 at 18.5 for their inital aretonel toluene mixture. Assure student x was Fractional distillation on 50l of this mixture and graphed ther results. At which bolove of their distiled (xaxis) would student x expect to rapid increase 2 the records a refractive index. Jee distillation temperatury abel to perform

Estimate pe for the aquatic systems characterized by the following information i) Water from deeper layers of a lake having O2(aq) 0.02 mgL and a pH of 7.0. ii) An anaerobic digester in which 60 CH.(g) and 40 CO2(g) are in contact with water of pH 7.0. i) reasonable to set PH2S between 10 and 10 atm. A water sample of pH 6.0 containing SO. 10 M

Prove CpC,DT T ,Determine the change in molar Gibbs Free Energy of liquid water at 25C as pressure increased from 1 bar to 10 bar. Repeat for steam assuming ideal gas under same condition.

12. For the reaction scheme shown below, provide the structure of the starting material in Box A and the final product in Box C. In the box below the arrow, provide the reagent(s) and condition(s) required to accomplish this transformation. The H NMR spectrum of the final product (Compound B) is provided below. Compound A was analysed by mass

Enter electrons as e. Use smallest possible integer coefficients. States are not required. If a box is not needed, leave it blank. Standard Reduction Potentials (Volts) at 25 C Br, () 2 e2 Br (aq) 1.080 0,(2) 4 H,O(aq) 4e6 H,0) 1.229 2 H,O(1) 2 e H2(g) 2 OH (aq) 0.828 0.740 Cr (aq) 3 eCr (9) A 0.137 M neutral aqueous CrBr, solution is

In a high school chemistry experiment a student used stoichiometric calculations to predict the quantity of precipitate in a chemical reaction to be 2.59 g. This quantity is called the yield and thei is likely to be The row that completes this statement is 1actual Il theoretical Il less 1theoretical I actual ill more theoretical 1. Il actual

Construct (sketch) for cell using the following reactant: -Voltaic cell with Al 3+ (1.0 M), Al (s), H + (1.0 M), H 2 (1 atm) For the cell: A -Label the electrodes with their charges and showing the directions of electron flow in the circuit and of the cation and anion flow in the salt bridge. B- Write a balanced equation for the reaction that

8. Graph the results of your experiment as a line graph and connect the dots. Refer to the table of the results of the pictures on Canvas. Only graph the tubes that could possibly contain maltose. The independent variable (what you are changing) should be on the xaxis. The dependent variable (what you measured your results) should be on the

What is the formula for tungsten (VI) dihydrogen hypoarsenite pentahydrate

Describe foun mechanism Of Self healing playmeas polyneos

From the following data solve using this equation:

Notes k (solubility in H2Osolubility in DCM) 6.0 (at 25C) V2 V2 V,k) (Final mass of solute)H,0 (Initial mass of solute)H,0 Where V volume of organic solvent used per extraction V original volume of water n number of extractions k distribution coefficient

Sydney Water processes wastewater from 1.4 million households at Malabar Sewage Treatment Plant. This wastewater is treated by primary sedimentation, producing primary sludge of 5000 m.day. A representative sample of primary sludge was sent to Sydney Water analytical laboratories for characterisation and the following results were produced

Consider the optimization problem minimize a4.x subject to a 2.a 4 ,(b) Apply the second order condition to determine the whether or not the local extremizers are local minimizers or maximizers or neither.

A 100.0-mL aliquot of 0.0400 M K 2 SO 3 (For H 2 SO 3 : p K 1 = 5.22, p K 2 = 9.46) was titrated with 0.200 M HBr. 30.0 mL of acid is added, and what is the pH?

A sample of hydrogen, H2, occupies a volume of 200 mL and exerts a pressure of 1500 torr. If the volume expands to 300 mL with no temperature change, what pressure will the gas exert 760 torr 1500 torr O torr 1000 torr 2250 torr

Consider the reaction N2(g) + O2(g) 2NO(g), for which Kc = 0.10 at 2,000C. Starting with initial concentrations of 0.091 M of N2 and 0.091 M of O2, determine the equilibrium concentration of NO in mol/L.

4. Draw the chemical structure of poly(Nisopropylacrylamide)blockpoly(styrenecomethyl acrylate). (6 marks) 5. The higher the molecular weight of polymers, the better mechanical properties. However, why it is not desirable to have an extremely high molecular weight of polymer materials (8 marks)

You filled a can of water in the FTTC at 85C and an atmospheric pressure of 101,50 kPa with a fill depth of 1,5 cm (countersink depth diameter of a 1M can is 73 mm. A month later the 5 mm). The 3 vacuum was 45 kPa. a) Calculate your cans actual headspace volume. b) Calculate the absolute pressure in the headspace. c) Calculate the pressure of air

1 H 1.008 3 4 Li Be 6,941 9,012 11 12 Na Mg 22.99 24.31 19 20 21 K Ca Se 39.10 40,08 44.96 22 Ti 47.88 NA 6.022 x 1023 mol1 1 amu 1.6605 x 1024 g 1 cal 4.184 J 5 6 BCN 10.81 12.01 14.01 16.00 23 24 27 28 29 30 25 26 V Cr Mn Fe Co Ni Cu Zn Ga 69.72 50.94 41 52.00 54.94 55.85 42 43 44 58.93 45 58.69 63.55 46 47 65.38 48 49 40 Zr Nb Mo Tc Ru Rh Pd

Complete the following table using information from your lab. For 'type of solution', indicate whether the solution is acidic, basic, or neutral. pH [H 3 O + ] [OH - ] Type of solution 1.0M NH 4 Cl 3.0 1.0M NaCl 6.5 1.0M Na 2 CO 3 10.5 1.0M NH 4 OH 9.0 Vinegar 2.0 Orange Juice 2.5 Milk 7.0 A Soft Drink 3.5 Tap Water 7.5 Please fill out the table

Deduce the structure of this compound using the spectroscopic information. Assign all significant peaks in all spectra.

Chem 2125 Lab MS T mass spectrum of this molecule does not show its molecular ion peak (which would be at 132 if observable). Spectroscopy Problem 5 Summer 2021 Name Directions Deduce the structure of this compound using the spectroscopic information. Assign all significant peaks in all spectra. 20 me IR Retive intensity

By using the integrated ClasiuesClapeyron equations and using the corresponding data, construct in excell a unicomponent PT phase diagram showing the equilibria S G, SL, L G, the triple point and the regions of phase stability for the case of cyclohexane. Process. Construct a PT phase diagram in Excel for cyclohexane from 20 Celsius to 300

1 Arrange the following compounds in the order of increasing boiling point. Explain your reason (10 points) NH2 Q 2 Explain briefly major properties of carboxylic acids (molecular structure, physical and spectral properties) (10 points) a3 Identify the weakest CH bond in each of the following compounds. Explain your reason. (10 points) (a) (b) ()

1 Arrange the following compounds in the order of increasing boiling point. Explain your reason (10 points) NH2 Q 2 Explain briefly major properties of carboxylic acids (molecular structure, physical and spectral properties) (10 points) Q3 Identify the weakest CH bond in each of the following compounds. Explain your reason. (10 points) (a) (b) (d)

Describe how you would make a biosensor to measure glucose using a pH electrode. The reaction of glucose with enzyme is given below where glucose is converted to gluconolactone and then gluconate. i) how the enzyme will be placed on the electrode ii) how the measured signal will be related to the glucose concentration iii) a calculation of what

The resistance (R) of a cylindrical conductor is proportional to its length (L) and inversely proportional to the square of its crosssectional radius (r) R r2 Suppose L and r are measured to a precision of 0.1. What is the maximal relative error in R Suppose a solution of concentration Co and volume V. is diluted by successive additions each of

The active ingredient in Toddlerium is the diprotic acid isabellic acid (molar mass 136.5 gmol, treat as exact value). You titrate a 8.00g sample of Toddlerium with 0.1223M sodium hydroxide (standardized). The resulting titration is shown below. Assume the sample is completely titrated in other words, adding more titrant would not further

2. Intramolecular aldol cyclization of 3methyl2,5nonanedione with aqueous NaOH yields a mixture of two enone products in the approximate ratio 91. Write their structures and show how each is formed.

If 51 26, what is the value of z Express your answer with three digits to the right of the decimal point. View Avallable Hint(s)

write a brief essay on an antiviralanticancer that is UNDER CLINICAL TRIALS currently (not released into the market yet) detailing its proposed mechanism of action.

Which of the following is correct for reversible or irreversible compression of an ideal gas (from V to V2) (A) reversible work irreversible work (B) reversible work irreversible work (C) reversible work irreversible work (D) w negative sign (E) reversible work irreversible work PextAV

how many carbon and hyrdogen is in this diagram? identify all sp2 hybridized atoms. what is the hybridization of theoxygen atom

H. H. H. 77

A compound consisting of C, H, O only has a molar mass of 331.5g/mol. Combustion of 0.1000g of this compound caused a 0.2921 g increase in the mass of the CO 2 absorber and a 0.0951g increase in the mass of H 2 0 absorber. what is the empirical formula of the compound?

Which of the following structures have a 1 formal charge on the sulfur atom HCS HCSCH S. O HCS HOSOH H. IV H. V. 3D O U alic

Solution:-

The percent by mass of (nH20) molecules in M9SO4.nH20 is 51.2 . The number moles of H20 (n H20) is Select one O a. 2H20 O b. 5H2O O c. 8H2O O d. 7H20

Given the following reactions, then arrange the metals according to their relative reactivity (from most to least) Fe(s) Pb2 (aq) Fe2(aq) Pb(s) Mg(s) Fe2(aq) Mg2(aq) Fe(s) Pb(s) Cu2(aq) Pb2(aq) Cu(s) Select one O a. Mg Fe Cu Pb O b. Mg Fe Pb Cu c. Cu Pb Fe Mg O d. Mg Cu Pb Fe

10. What is the equation that allows to determine the position of any functional group, its meaning and the units that each variable has? 11. Functional groups showing substituent-dependent absorptions and the degree of symmetry around it are:

A 50.0 mL solution of 0.15 M HCI was used to dissolve a 1.45 g of antacid tablet. The 2.09 excess HCl was then )titrated with 22.0 mL of 0.095 NaOH solution. If the active ingredient in the tablet is Mg(OH)2, calculate the mass percent of Mg(OH)2 in the tablet. Mg (OH) (Molar mass of Mg(OH)2 58.3 gmol) 3D a) 15 b) 43 c) 22 d) 11 e) 4.0

For each of the following reactions, give the organometallic product of the reaction, name the class of reaction taking place, and indicate which metal complex would react more readily. Explain your answers. i) Reaction of H2 with trans-[M(H)Cl(P(i-Pr)3)2], M = Ru or Os.

A. One gram (1.00 g) of activated charcoal was added to 100 ml. of the following acetic acid solutions and shaken until equilibrium has been established. The final concentrations were determined by titration with standardized NaOH solution. Calculate the surface area of charcoal given that the aren occupied by a single acetic acid molecule at the

The Pourbaix diagram for vanadium is shown below (11) (111) (iv) (vi) ESHE V 1.0 0.5 0.0 0.5 1.0 Vo V VO(OH) VO VOH V(OH) V2 VO(OH) V6013 VO(c) Os(C) VOH VO3(c) VO,OH 8 10 t 25C 12 pH Which vanadium species is the strongest oxidizing agent at pH 10 Give the pH and potential values at which equimolar amounts of V and VOH will coexist. Can VOH

Which of the following statements concerning radiation absorption by living tissue isare CORRECT The quality factor takes into account the differences in damaging power 1. of the various forms of radiation. 2. One gray denotes the absorption of 1 joule per kilogram of tissue. The Sl unit for biological damage is a sievert (Sv), which is determined

Which of the following functional groups will appear in the range 160220 ppm in 13C NMR A) ethoxy group B) aromatic carbons C) carbonyl group D) methoxy group

A series of experiments is prepared according to the following conditions: Element Mass, g Benzene 0 20 40 55 84 100 Toluene 100 80 60 45 16 0 If the vapor pressures of benzene and pure toluene, at these working conditions, are: 119.6 mm Hg and 36.7 mm Hg, respectively, obtain: a) A graph where it represents the partial pressures of the components

Captopril (90 mg, 70 assay) was dissolved in 25 ml of solvent to prepare solution A. Working 500 uL from A in 25 mL flask. The std curve was prepared by pipetting 1, 3, and 6 mL of working to three 25 mL flasks. QC sample was prepared by pipetting 4.5 mL of working to a 25 mL flask. (Answers with 5 decimal points) Stock (mgmL) Working Std1 Std2

Look up the Material Safety Data Sheets (MSDS) of 1-tetralone, methyl iodide and methyl vinyl ketone and summarize each in one paragraph. How many sections does a MSDS contain in general?

In this assignment, you are given the twostep synthesis of 10aMethyl1,9,10,10atetrahydro2H phenanthren3one. This compound can be converted to a multitude of products in targetoriented synthesis. In STEP 1, 3,4Dihydro2Hnaphthalen1one, known by its commontrivial name 1 tetralone, is alkylated with methyl iodide, using sodium ethoxide as the base. In

Synthesize the molecule below with the absolute stereochemistry shown HN HN

Pyruvate carboxylase is allosterically activated by the presence of acetylCoA. Glucagon increases expression of thus increasing its availability during fasting states. and O a. PFK 1 O b.Pyruvate kinase O. Malete dehydrogenase O d. PEPCK

Slop CH acetone. 0520,3 Q.8. The following data are for two runs for the general acid catalysed iodination of HA. Slope (1) 0.05 M. 0.0092 (2) 0.1 M 0.0152 Given K 1.55 x 10 Ka RH RTIP Determin the specific and general acid catalytic constants (K and KHA) RHA kobsbi Rabs t n and S03 0.01M.. (7 points) S 5

What is the molarity of a KCl solution made by diluting 12.5 mL of a 2.0 M solution to a final volume of 100. mL?

Which one of the following is the largest mass A) 7.6 x 10 mg B) 7.6 x 107 ng C) 7.6 x 102 kg D) 7.6 x 10 ug

A 100 ml of 0.05 M concentration of ethyl acetate was mixed with 100 ml of 0.05 M of NaOH. After 10 min, the concentration of NaOH was 0.0435 M and after 30 min the remaining concentration of NaOH 0.041 M. Calculate a) The rate constant of this reaction b) The halflife time (t0.5) Of this reaction

Sketch a diagram showing the formation of energy levels from the valence orbitals for Rb Rb(2) Rb(3) and Rb(n-) a) On the diagram place arrows indicating how the electrons fili these energy levels.b) How many energy levels are present in the valence band of a single crystal of rubidium with a mass of 48.3 92

Provide a complete reaction mechanism for the conversion of 4methylbenzenesulfonyl chloride to 4methylbenzenesulfonamide as shown below. In this mechanism, please also account for any side products that occur. NH2 NH,OH 4methylbenzenesulfonyl chloride 4methylbenzenesulfonamide

Using isopropanol and bromobenzene as starting reagents, synthesize the primary structure of the tripeptide Leu-Fen-Val. Draw the primary structure of said tripeptide and indicate how you would determine it by specifying each method that allows its resolution.

What are the major products of this reaction sequence 1. Br2 2. NANH2 (2 eq.) 3. . a) b) Br HO c) Br d) . HO

What is the major organic product 1) MeMgBr (1eq) 2) NH4 HO a) o HO b) H c) HO d) HO

In the titration of 10 mL of 0.1 M Sn by 0.2 M Cet, calculate the potential of the titration solution in the conical flask after the addition of the following volumes of the Ce Volume addedml E cell volt 4 6 8 10 12 14 16

A quantitative protein analysis is performed on an aliquot of a 24-hour urine specimen. The test indicates the presence of 150 mg/dL protein. If a total urine volume of 2.100 L is collected, how many grams of protein are excreted in the 24-hour specimen?

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Table Q4.10.01 M protein filtration at 5.0 bar u(ms) J (ms) 0.23 4.980E05 0.30 4.983E05 0.542 0.36 5.020E05 0.557 0.43 5.030E05 0.557 0.51 5.110E05 0.576 0.58 5.287E05 0.574 Robs 0.535

Outline two Wittig alkene syntheses of 2,3dimethyl1butene. Is one synthesis preferred over the other If yes, please indicate which one and your reasoning. No need to show the mechanism, only reactants. (6 points)

How much silver is it possible to dissolve in 0.1 mol/l chloride solution(Ksp of Agcl: 1.77*10^-10), that also contains 0.5 mol/l ammonia(pKb=4.75) and the pH is 7.0. and in the solution, these two complexes are formed.

Ag NH3 Ag(NH3) Ag(NH3) NH3 Ag(NH3)2 K(ANH)2.1103 KAg(NH3)2)1.7107

Find the k th moment M k , k > 0 is a positive integer, for the binomial random variable with parameter n and p.

Given two complementary strands of DNA containing 1.03 x 102 base pairs each, calculate the ratio of two separate strands to hydrogenbonded double helix in solution at 2.98 x 102 K. (Hint The formula for calculating this ratio is e bonded doublestrand DNAS and singlestrand DNAS and R is the gas constant.) Assume the energy of hydrogen bonds per

I. Indicate in each case if the movement of electrons is correct or incorrect. Explain correcto mismo electrones sin parear incorrecto una estructura no tiene electrones sin parear y la otra tiene dos electrones sin parear 47 Aprendiale Active de laQuinica Orginicataneicle tancounPere, PD. Univenidad de erte tice, 2012 Scanned by CamScanner II.

How do we find the limits of resolution and the amount of error of the classifier in theory. There are two classes of incident vectors w1, w2 with normal distribution with the following parameters P(xw1) N(2,0.5)(normal distribution) P(xw2) N(1.5, 0.2)

Amino acids generally have two pKa values, one in the range of 2 to 3 and the other in the range of 9 to 10. Serine, for example, has pKa values of 2.19 and 9.21. Using species such as acetic acid and ammonia as models, suggest the origin of the two pKa values. Ka=1.8105Ka=1.8105, Kb=1.8105

Four IR spectra, A D, are shown below. The compounds concemed are (in random order) 2butanol (a secondary alcohol), heptanal (an aldehyde). 3pentanone (a ketone) and acetic acid (ethanoic acid, a carboxylic acid). Use the crude correlation table and chart on the previous page to determine which spectrum belongs to which compound. and assign as