Chemistry Questions and Answers June 20, 2020

A weak acid, HA, has a pk, of 4.014. If a solution of this acid has a pH of 4.298, what percentage of the acid is not ionized Assume all H in the solution came from the ionization of HA. 11 percentage not ionized Incorrect

In the experiment of determination of the molar mass of a nonvolatile solute, K represents 1. Freezing point depression constant for the solute. 2. C Freezing point depression constant for the solution. 3. CFreezing point depression constant for the solvent. 4. CFreezing point depression constant for the thermometer.

Ideally, the freezing point depression depends on 1. C The type of particles of solute. 2. CThe number of particles of solute. 3. Both the number and type of particles of solute and solvent. 4. CNeither the number nor type of particles.

5. Calculate Kp for the following reaction 2 A(g) 2 B(g) C(g) at 400 C if Kc at 400 C for this reaction is 0.75. (R 8.314 Jmol.K 0.0821 L.atmmol.K) (3.5 Points) 8 O 19 O 30 O 41 O 53

2) Swimmers at a water park have a choice of two frictionless water slides as shown in the figure. Both slides drop over the same height, h. How does the speed v1 of a swimmer reaching the end of slide 1 compares with v2, the speed of a swimmer reaching the end of slide 2 A. vl v2 B. vl

7. Which of the following compounds cannot be a BrnstedLowry base (3 Points) PO, OH NH, O NH. O H20

The name of 120 is lodine oxide lodine pentoxide diiodine pentoxide two iodine pentoxide Question 20 A A possible set of quantum numbers to describe an electron in a 5p sub shell is B D 0.m 12 n4,10,m n5.11,m, 0,m n 5,10,m 12 0,m m 12 n512,m 2,m 2

9. If only 0.9 of 0.50 M solution of a weak base was ionized. Calculate its Kb value (3.5 Points) O 1.3 x 103 O 1.6 x 104 5.2 x 105 O 4.1 x 105 O 2.7 x 104

11. What is the pH of 0.25 M NaNO2 solution Ka of HNO, 4.0 x 10 (3.5 Points) O 3.7 8.4 O 9.0 O 6.0 O 5.6

12. The work done to compress a gas is 50 J. As a result, 20 J of heat is given off to the surroundings. Calculate the change in energy of the gas. (3.5 Points) O 30 J O 20 J 40 J 70 J 70 J

Ferrocene, Fe(C10H10ks) molar mass 186.03 gmoljcan be prepared by reacting 3.0 g of FeCl (s) molar mass126.75 gmol with 2.0 g of cyclopentadiene C.Hmolar mass 66.01 gmolland an excess of KOH, as shown in the following reaction FeCl 2C5H6 2KOHFeC0H10 2HO A student who carried out this reaction obtained 2.7 g of ferrocene. Of the following choices

15. The entropy will usually increase when I. a molecule is broken into two or more smaller molecules. II. a reaction occurs that results in a decrease in the number of moles of gas. II. a liquid changes to a solid. IV. a gas changes to a liquid. (3 Points) O Il and III O I only I, II, and IV O Il only O I and II

17. For the reaction A B C AH 30 kJmol and AS 50 JK.mol. At what temperature will this reaction be spontaneous (3.5 Points) The reaction is spontaneous at all temperatures. At a temperature greater than 600 C. The reaction is nonspontaneous at all temperatures. O At a temperature lower than 327 C. O At a temperature greater than 327 C.

18. Calculate AG at 298 K under the conditions shown below for the following reaction. 3 02g) 3 7.66 1058 P(O2) 0.41 atm P(O3) 5.2 atm (R 0.0821 atm.Lmol.K 8.314 Jmol.K) (3.5 Points) 2 0G) 3D O 17.8 kJmol 432 kJmol 109 klmol 341 kJmol O 47.4 kJmol

5. What does the following algorithm perform and what is its complexity int abc (int m, int n) int ret 1 for (int i 0 i

20. Use the data given below to find the equilibrium constant for the following reaction at 30 C Br2(1) 21(aq) 2 Br (aq) I2(S) E Br2 Br 1.07 V E I2I 0.53 V (R 8.314 Jmol.K 0.0821 L.atmmol.K, Faraday constant 96500 Cmol.e) (3.5 Points) 3.1 x 1017 O 1.1 x 1017 5.3 x 1017 9.1 x 1017 6.9 x 1017

21. Use the data given below to calculate AG (in kJmol) for the following cell reaction at 25 C Mg(s) Sn2 (aq) E Sn2 Sn 0.14 V E Mg Mg 2.37 V Sn 1.0 M Mg 0.05 M (R 8.314 Jmol.K 0.0821 L.atmmol.K, Faraday constant 96500 Cmol.e) (3.5 Points) Mg (aq) Sn(s) 3D 448 452 438 432 444

1. A 2000 kg lorry moving at 15 ms to the east and a 500 kg car moving at 20 ms to the west participate in a head on crash. What are the speeds and directions of the cars after the impact (Consider this event to be a completely inelastic collision) (30 pts). 2000 kg 500 kg

If only 1.6 of 0.20 M solution of a weak base was ionized. Calculate its Kb value (3.5 Points) 6.5 x 10 3 5.2 x 10 5 1.2 x 10 1.3 x 10 3 2.7 x 10

Step 1: Watch a detailed explanation of the volumetric titration technique at https://www.youtube.com/watch?v=YqfvRBJ-iPg Step 2: Choose an acid and a base in the Default Lab of Chemcollective Virtual Lab. Step 3: Hypothesize that the acid is a strong acid and the base is a weak base. Step 4: Design two acid-base titration experiments with

The standard reduction potential of Sb 2 O 5 to SbO + in an acidic medium is 0.60V, and in a basic medium, the standard reduction potential of Sb 2 O 5 to Sb 2 O 3 is -0.13V. a) What is the value of Kps=[SbO + ][OH - ]? b) what is the pH of a saturated solution of Sb 2 O 3 at 298K?

what chemicals and solvents must be mixed to synthesize these compounds?

1 M

Explanation is compulsory direct And not allowed

Decide whether the Lewis structure proposed for each molecule is reasonable or not. proposed Lewis Is this a reasonable structure If not, why not molecule structure Yes, its a reasonable structure. No, the total number of valence electrons is wrong. , 0C 0 The correct number is O No, some atoms have the wrong number of electrons around them. The

1 Construya el modelo de cada especie del nuevo grupo asignado por su instructor y complete la siguiente tabla Formula de Lewis Formula Molecular Polaridad de molculas de Geometria electrnica Geometria pares libres Hibridacin grupos enlazantes tomo molecular Grupo en tomo central central CH3 CI NCl Scl2 ASFS IFs

A sample of pure sodium carbonate Na2CO3 ( M.mass 106 gmol),weighing 0.3542g is dissolved in water and titrated with a solution of HCl.A volume of 30.23mL is required to reach the MethylOrange end point .The molarity of the acid solution is (2HC1NA2CO32NAC1 H2OCO2) Select one O a. 0.1212 O b. 0.2211 O c. 0.02211

A soil (920kg) containing 25 mgkg Zn was mixed with 2400 liter wastewater. The leached amount of Zn to water was 8153 mg, which choice is the correct Zn in soil 12.5 mgkg, Zn in water 12.0 mgL Zn in soil 16.1 mgkg, Zn in water 4.5 gL O Zn in soil 16.5 mgkg, Zn in water 4.3 mgL Zn in soil 16.1 mgkg, Zn in water 3.40

One tablet (850 mg active ingredient) was dissolved in 900 ml of 0.1 M HCI using the dissolution quality control test, Sample was withdrawn after 30 minutes and the following results were obtained 1. Calculate the of release Dilution Ratio Absorption Sample 15 0.550 Standard 13 0.557 Standerd Preparation Prepared by dissolving 150 mg of metformin

Fenuron (molar mass 164 gmol) is added to the soil under the following conditions mass of soil 159 gram, mass of organic matter 11.5 gram, volume of water 2.5 liter containing 160 mgL Fenuron, t12 128 day, mass of remaining Fenuron is 100 .mg in water after adsorption Caq (molL) is 105x3.4 O 106x6.4 O 105x5.6 O 104x2.4 O

The burner gas with pure sulphur is burned with 30 excess air. Of the sulphur burned, 5 is converted to SO, and the rest to SO2 Calculate each of the following (() N2 in the air supplied (ii) SO, produced (iii) Oz consumed (iv) the Orsat analysis of the burner gas

A 0.8 mdiameter pool of ethanol is ignited at floor level in a room with a normal door opening. After a while the smoke layer stabilizes at a height of 1.5 m from the floor. Calculate the CO, concentration in the hot layer. Suggested answer Using equations and tables from Chapter 3, we find m 0.0075 kgs, m, roughly 0.8 kgs, o 0.086, yco, 1.77

A tetrapeptide contains the amino acids Phe, Ala, Gly, and Leu. Partial hydrolysis affords the dipeptides PheAla, AlaGly, and LeuPhe. The structure of the tetrapeptide is a. AlaGlyLeuPhe. d. LeuPheGlyAla. b. LeuPheAlaGly. e. PheLeuGlyAla. c. GlyAlaPheLeu.

1. Define drift when using a balance. - unstable weight readings, which typically occur due to static charge and inconsistent temperatures. Drift can cause changes in the measurements and leads to imbalances in displays. 2. What is the most accurate reading when weighing a solid ?

4. Calculate the pH of a 25 ml solution containing 0.5 g of codeine (MW 299.36) and 1.7 g of codeine phosphate (MW 406.37). The pKa of codeine is 7.9. a. Ans 7.5 5. Calculate the percent ionized and unionized of cefazolin at pH 3 (pKa 2.1 salt form is cefazolin sodium). a. Ans ionized 89 unionized 11 6. Calculate the ratio of ionized

A natural water is in equilibrium with CO2 and CaCO3. Calculate pH if the mixing ratio of CO2 .is 620 ppmv. Assume that Po 101325 pascal and temperature is 25 oC CO2(g) CaCO3(s) H2O(L) Ca2(aq) 2HCO3(aq) K 1.28x 1011 M3pa 3D HCO3(aq) H2O(L) H2CO3(aq) OH(aq) Kb 2.2 x 108 3D 8.14 8.71 8.45 8.52

B. Assign with reasoning the partial H NMR spectra P, Q and R below to the following isomers L. M and N. Br Dr Br OH OH L. M CHOH CHBR P. 3.1 3.0 Ppm 3.6 3.5 3.4 3.3 3.2 3.0 Ppm 3.6 3.5 3.4 3.3 3.2 3.1 R. 3.0 ppm 3.4 3.3 3.2 3.1 3.6 3.5 (c) Assign the spectra A, B, and C below to the arene isomers CHLBrCl Justify your answer. 7.000 ppT B.000 B 7

Explain how the changing charge on the complex affects the four successive stability constants in the reactions of Ni2 with C to form NC14. Your answer for part (b) must NOT exceed ONE side of A4 paper

TLC is useful for Determining how many components are in a mixture All answers are correct Determining if a compound is likely pure Comparing a known to an unknown sample Question 6 01 pts In TLC plate shown, which sample appears to be the purest in compound Z Y 1 2 3 4 4 et Question 7 01 pts In TLC plate shown, which two compounds are best

1. Give the molecular formula coresponding to this structural formula You may wish to review Sect. 1.12 in MMurry on skeletal formulas 2. How many units of unsaturations does a compound with the formula CtC have Show your work. You may wish to review Section2 in MMunry 3. Give the name of this compound, including stereochemistry relevant 4. Write

Two of the characteristic emissions in the spectrum of hydrogen have wavelengths of 486.12786 nm (aqua) and 434.04620 nm (blue) when measured in a vacuum. The index of refraction of air at 25C, 50% humidity and a wavelength midway between those two lines is 000270199. Calculate the frequency, wavelength and wavenumber of each of the two emission

Provide the biosynthesis pathway for the following structures

Consider an enclosed space with a volume of 12 m x 14 m 4 m that has 27 individuals smoking two cigarettes every hour. One of the gases coming out of a cigarette is formaldehyde and each cigarette may be assumed to emit 1.28 mg of formaldehyde. Conversion of formaldehyde to carbon dioxide can be assumed to be first order and the rate of reaction

Explain the physical significance of binary interaction coefficient among CO2, N2, C1, C2, C3, IC4, NC4, IC5, NC5, C6 and C7. ,Explain the physical significance of binary interaction coefficient among CO2, N2, C1, C2, C3, IC4, NC4, IC5, NC5, C6 and C7.

draw the Newman projections for the following molecule and a graph that shows the relationship between the relative energy of the molecule vs the angle of rotation (energy profile) Br CI CH3CHCHCHCH3 ,Br CI CHz CH3 CH3 I I

The initial abundances of O, Mg, and Si atoms are respectively in the ratio 21:1:1. And O, Mg, and Si respectively have atomic masses of 16, 24, and 28 a.m.u. Assuming a planet is made of olivine minerals (Mg2SiO4), how many O atoms are left over for every 2 Mg atoms used? Assuming the extra O atoms combine with hydrogen to form H2O, what is the

For the reaction, 2NO4NO20) The following data were obtained Time 0 100 300 600 900 T338 K N0s, M 1.0010 6.14 10 2.3310 5.4110 1.2610 T318 K N0, M 1.00 10 9.54 10 8.63 10 7.43 10 6.39 10 T298 K IN0s, M 1.00 10 9.69 10 9.15 102 8.40 10 7.70 10 (a) Calculate Activation energy (Ea) and Frequency factor (A). (b) Find the E, and A using the

Calculate the following values

(1) A C, C2 where, C add all digits of your Batch e.g. 2016 9 (If you are from 2016 Batch) C2 add all digits of your Roll Number e.g. 049 13 (If your Roll Number is 049) 3 36 (ii) B C3 where, C3 add all digits of your Date of Birth e.g. 06082000 16 (Date of Birth 6th August 2000) C3 21 3D (iii) C A10 (You can round off the value ofD to one

In aqueous dispersion of charged discoid colloids at T = 20 o C a precipitate is formed when NaCl is added with a concentration of 0.01 mol / lt. Calculate the interaction energy per unit area of two colloids that are parallel to each other at a distance H = 2 nm

Choose the statement that is incorrectabout rings. . Planar cyclobutane is its most stable conformation. . Planar cyclopentane would have small angle strain but severe torsional strain. C. The chair conformation of cyclohexane has no angle or torsional strain. D. Cyclopropane has the greatest angle strain. . The chair conformation has less

Provide a detailed (arrow-pushing) reaction mechanism for the reaction scheme given below SONOGASHIRA COUPLING SYNTHESIS

1. NaBH. 91 2. TMSCCMgBr. MEOCOCI, 0C. 65 3. K,CO,, MEOH, 70 1. MCPBA, OC, 96 2. cat. Pd(PPhylClal cat. Cul, nBuNH 49, 48 MeO Sonogashira crosscoupling OH quinoline carboxaldehyde, 47 48 1. DMP, 61 2. CsF. 0C, 21 MeO Meo TMS 49 OH TMS Dynemicin core analogue, 51 50

1234 Given the data table below (values and uncertainties in F and G) and the algorithms relating F and G to x and y (values to be plotted on x and y axis), calculate the four values each of x and y. along with their uncertainties. Trial Let x 2(F14.68) Trial Your Calculated Results 1 2 3 F 4 16.0 0.2 16.6 0.2 17.3 0.2 18.40.2 G (1.2 0.5)x10

A 4.20 g of ice at 0 0C is melted on the surface of a 35.0 g of aluminum metal surface which is previously heated to 76.3 0C. Calculate the final temperature when the system comes to the thermal equilibrium water = 4.184 J/g 0C ; Hfusion of ice = 6.01 kJ/mol ; metal = 0.901 J/g 0C

Calculate the Soda Ash (NaCO3 at 95 purity) to add to the previous question (if required) to achieve this hardness. If not required, what hardness level would be the lowest value you can reach before Soda Ash is required 61.3mgL

Will 260 miligrams of calcium carbonate raise the pH of 75.0 milliliters of stomach fluid from a low pH of 1.0 into the normal pH range of 1.53.5 The first step of this problem is to convert 260.0mg of calcium carbonate to grams of calcium carbonate. Submit a reply that that tells how you decided to approach the problem and shows the work that

2. Identify the strongest intermolecular force present in pure samples of the following substances when they exist in the liquidsolid phase CH3CN SO3 CCI4 CHNH2

Provided is the structure of isooctene, which is used to manufacture isooctane, a primary ingredient in gasoline. Decide which of the structures A, B, C or D is NOT a structural isomer of isooctene. isooctene A B D Structure A Structure B Structure C O Structure D

Chemistry equation 4:

(iv) Calculate, with the help of benzenes density, the mass of the volume benzene used. Calculate the molar mass of naphthalene by making use of equation (4).

Using the table of Vapor Pressure of Water below 100C, what is the tabulated value of Pwater at 20C QUESTION 12 From the graph below of the plot of in (Pwater) versus T. calculate the experimental value of Pwater at 45C. The slope of the line is 3.507.8 and the yintercept is 14.504. Report your answer in torr to 4 significant figures. Relationship

vs li Draw a diagram illustrating the temperature dependence of the chemical potential of liquid benzene relative to the solid and the gaseous phases. 1. (5 Draw a diagram illustrating the effect the addition of naphthalene has on the chemical 5 2. potential of benzene and hence on corresponding freezing and boiling points.

Match the specialized type of shearing to its definition or product produced. options: This process removes waste material from the final part. It produces irregularly shaped holes in the final part. This process presses material between parallel slits in sheet metal up or down to produce a pocket for a tab. This process produces a number of

The repulsive corecore energy between neighboring ions separated by r in a binary ionic crystal of 2N ions of alternating positive and negative charges of e is Arn ,where n9 and A2.23 x 10105 Joule.m9. At the equilibrium nearestneighbor distance of 0.2624 nm, the repulsive energy is 1.60 x 1019 J per unit cell. The crystal is identified as Given

Given a 0.100M solution of anserine at its isoelectric point and ready access to 0.200 M HCI, 0.200 M NAOH and distilled water, describe the preparation of 1 L of 0.0500 M anserine buffered solution, pH 7.20. Volume of stock solution needed mL Volume of HCl needed to adjust the imidazole group mL Volume of HCl needed to titrate the amino group

What is the last thing you should do before you leave a chemistry lab for the day?

Consider one molecule of nitrogen (nonpolar molecule) and one molecule of carbon monoxide (dipolar molecule) at 20 A apart and at a temperature well above room temperature. Compute the force acting between these molecules. Assume that potential energies due to various causes are additive and use the simple, spherically symmetric formulas for these

Write an equation for the dissociation of each of the compounds in Group B. group B H3PO4 HC2H3O2 H3BO3 HCI

4. Write an equation for the dissociation of each of the compounds in Group B. Use for strong for weak and write no reaction if there is zero conductivity. For phosphoric acid use the conductivity value to determine how many ions are produced by dissociation and write the appropriate equation. 10a1

Now assume you wish to make a butfer at the same pH, using the same subitancen, but want the total phosphale molanty (HPO PO,Degua 00 M Whatoonenmanof the KligPo, woudbe Express your answer to two significant figures.

3. Van der Waals and Virial constants for N are given below. Calculate values for B at 103 K and 273 K and C at 273 K from the van der Waals constants using the expressions derived in CTQ 2. Compare the calculated and tabulated values for B and C. How closely does the relationship found in CTQ 2 hold a (dm bar mol2) b (dm mol) 1.37 0.0387 T(K) 103

1. Given the following characteristics of a stream water 78 mgL HCO, 13.365 mgL Ca Mg2 Na SO, 164 mgL 121 mgL 11.5 mgL NO 18 mgL a) Checking the accuracy of water analysis and state if it is correct or not. b) Draw a bar chart of the ions involved before treatments. c) From the Bar Chart determine the species of compounds in this water. d)

A table of pK, values for various organic and inorganic acids can be found in the references section. CH3 CH3 OH A B bicarbonate D carbonic acid acetic acid acetate a) The weaker base is b) Its conjugate acid is c) The species that predominate at equilibrium are (two letters, e.g. AC) Answer questions ac about the Bronsted acidbase reaction

Two students convert were asked to convert 1.148x 10-5g into SI prefix. One student obtains 0.01148 mg while the other obtains 11.48 ug. Are their answers correct? Explain.

Label the peaks on the spectrum. Find the peak on the paper can it be circuled placing the structure of the compound in the box on the lower left-hand corner of the spectrum also Structure of the compound

CN NO O,N .COOEt NO, .CHO HN NH .CHO NH2 CHO OH OH

The periodic table shows O as 15.999 amu but 160 has mass 15.99492 amu. Why the difference (Answer in 15 words or less. Hint Answer is not sig figs or rounding.)

11. The following information is available for the extraction of Cu + 2 by CCl4 and dithizone: KD, c = 7x104, 2 = 5x1022; KAHL = 3x10-5; KDHL = 1.1X104 and n = 2. What is the extraction efficiency if a 100.0 ml sample of an aqueous solution of 1.0x10-7 M Cu2 + and 1 M in HCl is extracted using 10.0 ml, of CCl4 containing 4.0x10-4 M dithizone (HL )?

What is the pH if the concentration of the conjugate base (A) is 0.35M and the concentration of the weak acid (HA) is 0.25M after adding 0.05 M of NaOH (pKa 7) A. pH 7.3 B. pH6.3 C. pH8.6 D. others

an Untreated diabetic patient will have A. Metabolic alkalosis B. Metabolic acidosis C. Respiratory alkalosis D. Respiratory acidosis

27) A patient with panic attacks and hyperventilation is in a respiratory alkalosis. The excess hydroxide ions were able to overcome by which one of the following buffers, which has the greatest buffering capacity in and near to normal blood pH (pKa of dihydrogen phosphate is 6.80. The pKa of carbonic acid is 3.80. pKa of ammonium ion is 9.25, pka

which one of the Following is Lglucose a. b. . H H HCOH H OH OH H,OH H H OH H OH HOSH HOSH

The following membrane lipid is a major component of the inner mitochondrial membrane A. Lecithin B. Cephalin C. Cardiolipin D. Glycolipids E. Phsphatidylinositol

What charged groups Glutamine has at physiological PH in the blood A. Coo, NH3 . , , NH3 . , , NH3 D. COOH, , NH3 COOH COo NH2.

You are constucting concentrationresponse curves using an isolated tissue preparation set up in a 20 ml organ bath. You have access to a 20 200 l automatic pipette and are given a series of 10fold dilutions of the agonist from 102M to 10.5M. You are using the cumulative method of drug addition and need to work out the additions to achieve the

The data of the freshly prepared curve for 7days longterm gives a straight line equation (y12.5x0.22). Calculate the stability for the following QC QC (ngmL) AD AIS 0.550 1020 500 O 19.18 O 32.87 O None O 7.74 O 24.39 O 13.20

Field ionization mass spectrometer Wwire ionizes the microtips Microtips ionizes the analyte All are correct Dendrites are formed by pyrolysis acetonitrile on tungsten wires. The sample is diffused in the solid state. None is correct This method of ionization is hard

which of the following statements applies enzyme heme dioxygenase a) its results in hydrogen peroxide production b) it results in oxygen reduction to water c) it usually catalyzes endergonic actions d) it is a transferase enzyme e) it incorporates molecular oxygen into substrate structure

Which of the following statements is not true about enzymes A) they are all proteins with no exceptions. B) They are stereospecific to their substrates. C) they change during the reaction D) some enzymes can work on more than one substrate

an enzyme that converts alkene structure to alcohol maybe referred to as A) 7.1.1.2 B) 2.7.1.11 C) 5.3.1.1 D) 4.1.1.1. E) 3.4.23.1

A particular brand of gasoline has a density of 0 737 gmL at 25 C How many grams of this gasoline would fill a 16.0 gal tank (1 US gal 3.78 L) Express your answer to three significant figures and include the appropriate units. View Available Hint(s) H Value Units DARE

Calculate the enthalpy of neutralization for the reaction between NH, and HCI. O 26 kJmol O 22 kJmol O 52 kJmol O 15 kJmol

18. The column a) In normal phase, if analyte polarity increase then it will be faster c) If particle size increase then plates decrease e) All f) None b) If column length increase then plates decrease d) In reversed phase, if analyte polarity increase then it will be slower

CO(g) + 3H2(g) CH4(g) + H2O(g) Happens @ 300degrees Celsius The equilibrium concentrations of CO, H2, CH4 and H2O are 12.6 Pa, 7.6 Pa 6.06 Pa and 15.5 Pa respectively. The Kp value is 0.017. a) Determine the value of Kc at 300 C (Gas constant = 8.315 Pa m3 K-1 mol-1) and calculate the Kp value @ 800 degrees Celsius if the equilibrium

3) When adding a competitive inhibitor to an enzyme catalyzed reaction solution, then (assume no change in volume) A) K1 will increase accordingly B) Yintercept on a lineweaverburk plot will increase accordingly C) Kcat value will increase accordingly D) KI will increase accordingly E) KD value will increase accordingly

How to calculate the performance of a solid-state electrolyte with the following data: width 1.2cm and length 3.4 cm of a PVP and PEO blend.

What structural features allow for biological polymers to be informational macromolecules Which biomolecules are the most information rich and why ,Describe the key structures of a basic virus (not SARSCoV2). What is the purpose of each component

Calculate the sample densities

Data Table 1. Mass of Pipetted Samples of Water (The first one is done for you. Sample Density (gmL) mL Sample Mass (g) 1.00 0.99 g D massvolume 0.99 g1.00 mL 0.99 gmL 3.00 2.98 g 3.00 mL 2.98 g 4.00 3.99 g 4.00 mL 3.99 g 5.00 5.01 g 5.01 g 5.00 mL 9.89 g 9.89 g 10.00 mL 10.00 ,Data Table 1. Mass of Pipetted Samples of Water (The first one

Prepare a polymer solution by mixing 1 g of polystyrene with a molecular weight of 312000 g mol and 1 g of polystyrene with a molecular weight of 364000 g mol in 100 g of cyclohexane at T 35 oC. Calculate the concentration fraction, c , is the average overlap concentration of the polymer mixture. where The temperature 0 for polystyrene in

Using the give compounds below answer the following questions. NH2 Assignment Answer the following on a separate sheet of paper and scan them to submit online. HO HO 1. Make a prediction for each compound if it would likely be an acid or base. Then rank them in increasing strength as acid or base. benzenesulfonic acid benzoic acid benzyl alcohol

Based on Kapustinskii equation, calculate the lattice energy of AIF3. Given that W 1.079 x 105 kJ.pmmol and ionic radii are Al3 53 pm and F 119 pm. 2509 kJmol 1882 kJmol 7528 kJmol 5510 kJmol 5215 kJmol

Propose structures for D, E, and F and give a thorough explanation for each.

IR no peak near 3300 cm1 UV Amax 230 nm CHs D H2, Pt C5H H2, Pt E Hy, Pt CgHs IR 3300 cm1, sharp UV Amax 230 nm IR 3300 cm, sharp UV max 200 nm

What is the major product of the following reaction ) I b) II ) II d) IV NaBr Nal H,0 I II III IV

Solve fast

What is the major product of the following reaction ) I b) II ) II d) IV NaBr Nal H,0 I II III IV

Using toulmin argumentation pattern, Why does beer modify physiologic pH in a direct or indirect manner?