Chemistry Questions and Answers June 19, 2020

5. The following are the simulated H and 13CNMR spectral data of 10aMethyl1,9,10,10a tetrahydro2Hphenanthren3one. Please assign each signal to the appropriate Proton(s) and Carbon, using the same numbering scheme as given in the structure of the product. HNMR (CDCI3) 6ppm 1.26 (singlet, 3H) 1.36 (triplet, 2H) 1.58 (triplet, 2H) 2.55 (triplet, 2H)

Show that for the following reaction (First order with respect to both A and B) A 2B products The concentration is expressed as CRCAD In M 2XA In (1 ) CAO(M2)kt, M 2 CBOCA

1. Let us assume that you are given the following set of data X Y x1 yi I2 Y2 the following Figure depicts the Neural Network structure for this problem X1. x2 you are asked just to formulate the full (i.e. before computer implementation) neural network problem to compute the set of weights leading to the minimization of the difference between

The IR spectrum A is the compound heptanal. The structure of the heptanal is In the IR spectrum the peaks at below 3000 cm -1 corresponds to the sp 3 carbons i.e. asymmetric and symmetric -CH 3 stretching. The second peak at 2750 cm -1 is due to fermi resonance of the aldehyde. This is an unique for the aldehyde compounds. The third peak at 1725

Heptanal H

(a) Consider the stationary point structures A and B for this reaction noting that the reaction coordinate, X, principally describes the motion of just one hydrogen atom. Structure B is found to have the following vibrational wavenumbers 387, (i) 759, 1248, 1718, 3147 and 3219 cm. What do these tell us about the topology of the PES (ii) Using the

Identify which peak goes first in the separation of the hydroxinaprpxen and naprpxen, in HPLC. The mobile phase is Phosphate buffet ph = 3 / acitoctiril (90/10).

OH OH Naproxen Hydroxi naproxen

11. What is the confidence interval at 95 probability level for Outlet A Outlet A 4.03, 3.99, 3.98, 4.08, 4.01, 4.02, 4.02 True Value 3.98 Degrees of Freedom 95 Confidence 3 3.182 2.776 2.571 2.447 7 2.365 A. 4.010.018 B. 4.010.010 C. 4.010.015 D. None of the Choices E. 4.010.017 456

Mixers A and B are used to mix the solid particulates and the mixing constant K for Mixers A and B are 0.15 and 0.25, respectively. a) Calculate the shortest time required for mixer A to achieve perfect mixture. b) Calculate the time required for mixer A to achieve the same mixture / mixing efficiency if Mixer B is used to mix the particulars for

Name one commercial system which is capable of doing rapid thermal annealing for 300 mm silicon substrates. Explain briefly what rapid thermal annealing is and write your arguments why the system you have chosen would be the best for doing the rapid thermal annealing process after ion implantation on the 300 mm silicon substrates. Schematics or

Using the character table and irreducible representation (symmetry labels) of the stretches provided, which of the stretches would you expect to observe using IR spectroscopy F Se C2 Ozx Oyz 4 x Se 4. 2 2 C2v E C2 Ozx Oyz h 4 ci A1 1 1 1 1 2 A2 1 1 1 1 Rz B1 1 1 1 1 x, Ry 1 B2 1 1 1 1 . Rx 1 Irreducible representations for the 4 x SeF stretches r

Question 1. Au nanotube can be synthesized using a Ag nanorod hard template www (following figure). Please calculate the NsNv for a) The Ag rod template b) The Au tube product Ag nanowire HAUCI4 Room temperature 1.0 m 200 nm 15 nm Au nanotube

(a) The HeH ion is considered to be one of the first molecular bonds created in early Universe. i. Using the BornOppenheimer approximation, write down the Hamiltonian for the HeH ion in atomic units describe the meaning of all terms and explain the approximations you have made. ii. Sketch the molecular orbital correlation diagram for HeH ion and

A solution contains 6.00x103 M silver nitrate and 7.32x103 M zinc acetate. Solid ammonium carbonate is added slowly to this mixture. A. What is the formula of the substance that precipitates first formula B. What is the concentration of carbonate ion when this precipitation first begins Co, M

3. Data Record numerical values with units and the correct number of significant figures. Table 2. Data mass of nutmeg volume of ether mass of dry, recrystallized Trimyristin literature melting range of Trimyristin 1.018 aml 0.055 56CSTC heating rate (ramp) in Cimin Tmelt Temelt AT (TT) (10) 4. Calculate the recovery of pure Trimyristin from

Round the number 132.5512.

Propose a reaction mechanism for P4S3 + I2 isomerization

S 12 S. cs2 P. P. P.S3

4. Determine the initial concentrations of S2082 and I in each of the trials. Recall that Table 1 gives the concentrations of the stock solutions that will be used to create the reaction mixtures. The volumes of each reagent used are in the text below that table the total volume of each reaction mixture will be 65 ml. Provide these initial

In which one of the following structures does the central atom have a formal charge of 2 a. SF b. SO, . d. BeCl, e. AICI 0 i 0 Be O Select one a. e b. a . d d. b e. c O O

A coal which has complete analysis of 86.86 C, 4.44 H, 1.9 O, 1.0 N, 5 ash and 0.8 S. is burned with excess air. Air is supplied dry at 25C and 760 mm Hg. Analysis of the refuse shows 60 C and 40 ash. Partial orsat analysis of the stack gas (200 C, 755 mm Hg) shows 8.05 CO2, 2.42 CO and 2.9 H2. Calculate a. (15 points) excess O2 b. (15 points)

Which conformer of pentane is the least stable OCH,CH, CH,CH, CH, CH,CH, HCH,CH, H CH H. IV Select one O II O IV

what mass of KIO3 can be produced from a 0.512 sample that assays 20.1% AlI3?

10) By using the given 1) electronic absorption spectrum, 2) the TanaboSugano diagram for d complex in octahedral ligand field and 3) the absorptionemission spectra, explain the following 1) 10000 (M cm) 1000 100 10 200 300 400 500 X (nm) 600 3) 700 20 (M cm 0.01 2) 18 Energy 4719 16 14 (cm x 10) Absorption (,298 K) and emission (, 77 K) spectra

A researcher wants to prepare 200 g of poly(tetrahydrofuran) with a molecular weight of 12,000 g/mol via cationic ring-opening polymerization of tetrahydrofuran. The polymerization is performed at 0C using boron trifluoride etherate as catalyst, water as cocatalyst, and ethylene dichloride as solvent. a) Calculate the molar amount and mass of

The mineral petalite was discovered by Jos Bonifcio de Andrada e Silva at Ut Mines. Petalite has the chemical formula XAlSi 4 O 10 where X is an alkali metal. From 1g of petalite, Arfwedson received 0.96g SiO 2 + Al 2 O 3 . After the addition of H 2 SO4, Arfwedson received 0.147 g of X 2 SO 4. Use the atomic weights of Na (23), Li (7), S (32) and

Precipitates used in the gravimetric determination of uranium include Na2U2O7 (634.0 g/mol), (UO2)2P2O7 (714.0 g/mol), and V2O5 2UO3 (753.9 g/ mol). Which of these weighing forms provides the greatest mass of precipitate from a given quantity of uranium?

The oxidation of pyrite can be represented by the reaction 4FES, pyrite 150, 14H20 4Fe(OH)3 ferrihydraite 8SO3 16H (a) Write the pe equation for this reaction at 250c. Remember that when calculating the free energy, the reaction is written so that the oxidised forms are on the left and reduced forms are on the right. (b) Calculate the pe when

Use the first menu to select the type of measurement represented by the unit. Use the second menu to indicate the number of significant figures in the measurement. 0.002 94 g

The human body contains many elements from the periodic table. It is mostly composed of oxygen and carbon, but trace elements also have a significant role. The table gives the mass, in kilograms, of some elements found in the human body, based on a 70.0 kg person. Atomic number Element Mass (kg) 8 oxygen 45.2 6. carbon 12.6 1 hydrogen 7.0 7

A student wanted to determine the concentration of NaCl in a sample of water from Mission Bay for use in a Marine Studies project. The data table from her lab notebook is shown below. Use Excel to construct a standard curve, being sure to put concentration of NaCl on the xaxis. Instructions for how to graph with Microsoft Excel are given as pdf

i) Detail the binding interactions of the opioid analgesic N phenethylmorphine with the receptor binding site. As part of your answer draw out the structure below and annotate the relevant areas. , HOll. NPhenethylmorphine Olli

Find the concentrations of metal ions in solution at equilibrium resulting from mixing 50 ml of 0.200 M Ca with 50 mL of 0.100 M EDTA adjusted to pH 10. a, at pH 10 is 0.35. kf 5.0x10 10 Select one a. 0.050 M b. 0.01 M c. 0.150 M

Show how you would carry out the following transformations in high yield. In addition to the reactants, you may use any other reagents, for the syntheses. You dont need to show the mechanism, but write the product of each steps in order you do the reactions. 5a. (11 Pts) , NH2 5b. (16 Pts) NC CO,C,H OH NH2 5. (10 Pts) CH,OH HOH HOH HOH H,OH

Calculate the number of formula units in a 35.5 Kg sample of NISO2 a) 1.25x1023 formula units b) 9.92x1025 formula units c) 1.38x1026 formula units d) 1.74x1026 formula units e) none of the answers

How many Atoms are there in 0.075 kg of Kr a) 5.39x1023 atoms b) 5.72x1022 atoms c) 5.39x1022 atoms d 5.72x1023 atoms e) none of the answers

How many atoms of 102.91 grams of Rh 19 b) 6.022x10 23 d) 7.301x1012 e) none of the answers a) 9.119 x10 c) 7.301 x1021 What is the mass of 6.022x10 23 atoms of Cs a) 138.91 g b) 196.97 g c) 127.6 g d) 132.91g e) none of the answers

Calculate the number of formula units in a 25.5 Kg sample of NISO4 a) 1.25x100 formula units b) 9.92x1025 formula units c) 1.38x1026 formula units d) 1.74x1026 formula units e) none of the answers

At the bond length, which of the following is correct a) The net bonding force is zero and the boning energy is maximum b) The net bonding force is minimum and the boning energy is maximum c) The net bonding force is maximum and the boning energy is maximum d) The net bonding force is zero and the boning energy is minimum e) none of the answers

Identify the products A to H (all of which contain one or more mesityl andor (MeSi),CH groups) identification of any side products is not required. Draw the structures of compounds A to H, clearly showing the stereochemistry of the main group elements in each case. ,a PCI3, Et,0 (MegSi)2CHBR (MegSi),CHLi A 78 C LIAIH4, Et,0 0 C nBuLi, Etz0 B 20 C

Reaction ( ScCp2Cl ) with 1)halide 2)hydride and structure for product and determine (dimer or monomer ..) Cp2ScCl can be synthesised from sodium cyclopentadienide: ScCl3 + 2NaCp ScCp2Cl + 2 NaCl require : reaction product ( or any another example for organoscandium) with halide and hydride

A 0.476 g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized barium hydroxide. The equivalence point in the titration is reached after the addition of 25.1 mL of 0.145 M barium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid. Give your answer to three significant figures. gmol

Explain it

C. CH2CH2CH3 H2CH3

Select only one type of bond in each molecule. If there are multiples of one bond type for a molecule, select them all. Do not highlight atoms.

1. The pH of a solution is 4.44 0.04. Find [H+] and its absolute uncertainty. 2. Twelve dietary iron tablets were analyzed by the gravimetric procedure and the final mass of Fe2O3 (FM 159.688) was 0.2774 0.0018 g. Find the average mass of Fe per tablet. (Relative uncertainties in atomic masses are small compared with relative uncertainty in the

There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change. Each sketch is drawn as if the

5. Use transition state theory to determine the temperature dependence of the Arrhenius preexponential factors for the following threegasphase reaction. O N2 NO N The other word, for A a T, findn for each equation. You may assume that the activated complex is linear for reaction. Further, you may assume that hV

a) which ionization gives the best sensitivity the analysis of chloramphenicol b) The compound with highest retention factor c) What is the resolution between yohimbine and chloramphenicol d) What is the retention factor of yohimbine and chloramphenicol e) Chloramphenicol fragments to mz 152. What is the fragmentation structure Chemical Formula

10. A certain element X undergoes two successive alpha emission reactions followed by a beta emission reaction. The daughter nuclide formed is Ac230 (Z89).What is the identity of element X Th234 (Z 90) U235 (Z 92) Th238 (Z 90) U238 (Z 92) 3

7. NOBR is decomposed in an exothermic reaction. 2NOBrg) 2NO(g) Brz(e) The reaction is at equilibrium. Which of the following will occur when the system volume is decreased shift to the right shift to the left remain the same cannot be determined 8. 80.3 mL of NaOH solution was added to 217 mL of a 0.20 M HCI solution to reach the endpoint.What

On a somewhat cool day of 67 F, a 55 gallon drum is two thirds full of a volatile liquid and the lid on the pour spout is off. the barometer shows 28.8 inches of mercury. an employee sees the drum open and caps the lid tightly. a forklift accidentally hits but does not puncture the drum or force the cap off, it does dent the drum reducing its

In a 100 mL volumetric flask, accurately prepare an approximately 0.02 M aqueous benzoic acid by dissolving the 0.01606g of benzoic acid in about 20 mL and diluting In a separatory funnel place 25 mL of 0.02 M benzoic acid solution and 25 mL of 1-octanol. Discarded the 1-octanol phase and titrated the aqueous phase against 5.9mL of the 0.02M NaOH.

Volumetric pipettes are calibrated to 0.02mL. If the narrow shaft of the pipette (the portion having the calibration mark) has a diameter of 2.0mm, how much error (in mL) does the user suffer if (s)he misses the mark by 1.0mm?

Titration of Ca2t Mgat m a 50 ML Saple of hard dater requred 23.65 ML of 0.01205 mslar EDTA, a selmd 50 Ml aliguet Was made Aronaly basse hith Naott to precipitabe MgT the supernatamt Lequord was tifract ed with 14.53 ML OF EPTA Soluhem. Calculate, a) the total handness b) The Concent rahen C The Contentraben of MaCoz in ke sapk n as Mg(ob)a, of

Which of the following statements regarding gas furnace systems is/are true? a. A low-efficiency gas furnace system generally operates at a higher AFUE steady-state and a lower seasonal efficiency rating. b. Technological upgrades have improved gas furnace systems so dramatically such that the secondary heat exchanger extracts and recovers 100 %

Part F. Molecular Formulas and Empirical Formulas 11. Compute the empirical and molecular formulas for the following elemental analysis. H. Molecular CI Weight 32.0 6.67 18.7 75 12. Determine a class of organic compounds and propose at least one structure that fits this molecular formula.

Exhaled air contains 16% oxygen by volume. Assuming you exhale like the average person does during strenuous exercise (that is, you exhale about 1L of air per breath and you exhale 40 breaths per minute) and assuming the dive will take 90 minutes, what volume of oxygen will you end up exhaling?

Write the full (all electrons) electron configuration for an atom of gallium (Ga). Then state the number of valance electrons the atom contains, and in which energy level (n value) the valence electrons reside. ,Determine the chemical formula and the chemical name of the ionic compound formed from the ions Cat and CIO. chemical formula chemical

Using the above information, answer the following questions A,G(H20) 237,21 kJmol A,HCH2O) 285,83 kJmol AG RTINK AH R. KT KT, e a)What will the equilibrium constant at 25 Cand 100C respectively for the reaction 2H2 02 2H20 b) What will be the equilibrium constant at 25 C and 100 C respectively for the reaction H2 02 H20

Compare the most active and least active samples of alpha-amylase What is the fold difference in alpha-amylase activity between the samples? size of a sample 100 microliters. 10 microliters are taken for an experiment.

Quadrant Degree of Clearing Rank of Amylase Activity 6. T1 4 T1 3 BCD E

Define retention time. O the amount of time that the substance takes to melt O the amount of time that the substance takes to boil O the amount of time required to exit from the mass spectrometer O the amount of time required to set up the GCMS O the amount of time required to exit from the gas chromatograph

..

Which of the following compounds will have a base peak at mz 43 O (CH3)2CHCH(CH32 O (CH3CH2)2CHCH3 O CH3CH2CH2CH2CH2CH3 O none of these O (CH3)3CCH2CH3

What is the IUPAC name for the following compound OH

Model 3 Retrosynthetic Analysis of the Aldol Condensation In retrosyntbeti analysis (refer to CA13), the product is disconnected, or pulled apart, to determine the starting materials for the reaction. OH OH CH3 Ph CH3 Ph H3 H3 E Nu Product Synthons Questions 6. Model 3 shows the partial retrosynthetic analysis of the aldol condensation. (a) Label

(e) In a vanadium flow battery, the electrochemical reactions which take place at the electrodes during discharge are At the positive electrode (VO2)2SO4 HSO4 2e 2H2(VOSO4) 2(HO) At the negative electrode 2(VSO4) HSO4 V2(SO4)3 2e 2H E 0.99 V (vs. SHE) The overall cell reaction is (VO2)2SO4 2(VSO4) 2(HSO4)2(VOSO4) V2(SO4)3 2(HO) (i) E0.26

Explain this NMR 1h analysis?

2.7 2.6 2.5 2.4 2.3 2.2 2.1 DI 6.1 5.9 5.8 5.7 5.6 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 pf ppm 1.5 1.04 1.11 2.14

The following paragraph is the aim of an experiment regarding Cyclodextrin guest-host Chemistry. Rephrase and explain the following paragraph (including terminology, molecules and techniques listed) This experiment examines host-guest interactions between a small molecule (8-anilino-1-naphthalenesulfonate and Methyl--Cyclodextrin (ME -CD) a

Complete the reaction scheme below by filling in the missing reagents andor structure. Be sure to account for any stereochemistry shown. Each box is one reaction, but some reactions are carried out in two parts (e.g., reactions that are shown as i) and ii) such as those requiring a workup or are otherwise twopart reactions). 3 pts each box, 18 pts

Complete and balance the following nuclear equations by supplying the missing particle ) 4N He H ) K e (orbital electron ) He Si H ) Fe 2n Co U in Xe 2n

The substance Eugenone is obtained from acetate malonate, through the Claisentype condensation between AcetylCoA and Malony CoA molecules. How many AcetylCoA Malony CoA molecules were needed for this natural product Equate the biosynthesis of the polyketide precursor of this metabolite. Circle the C2 units derived from Acety CoA. What is the

Given the information from a semiempirical computational calculation on CO below, what orbitals contribute to sigma bonding in the HOMO of CO SemiEmperical Output Mo 1 2 3 5 6 8 (ev) 40.0320.6816.1513.03 0.999 6.082 CT S1 0.406 0.564 0.000 0.6610.000 0.284 C1 PX 0.000 0.000 0.457 0.000 0.759 0.000 C1 PY 0.000 0.000 0.239 0.000 0.397 0.000 C1

If the transport number of the cation of HCl is 0.8. Show what happens during the electrolysis of a solution of HCI when 6 milliequivalents of electricity is allowed to pass through the solution. Initially, the cathode, center and anode chambers of an electrolytic cell contain each 12 milliequivalents of HCI in aqueous solution. A. Illustrate your

The term symbol(s) of following configuration of Be 1s 2s2p is (are) A. P2,1,0 and P, B. P2,1,0 . . D. P1 E. D2.1.0

The following equation related to a very dilute ideal solution, the missing part ( in this equation is P, P 1W2M2 3D O a. M1W1 O b. X2 Oc. n1(n, n2) Od. AfusHmR

The allowed J values for the term symbol, F, are A. 4, 3 and 2 B. 4, 3, 2 and 1 C. 3, 2 and 1 D. 92, 72, 52 and 32 E. 92, 72 and 52

Figure 4 shows a possible mesh arrangement around the rivet hole when the plate is subject to a force. The mesh is viewed from above. Observe the meshing arrangement shown in figure 4. (i) Is it suitable for this application? Give reasons for your answer. (2 marks) (ii) From the diagram, describe where you expect to find the local point of maximum

FIGURE 4 (Rivet hole basic mesh)

1 Could you prediet the activity of the following compounds HN COOH A CH(CHah HO HO ,III) Identify the name of the drug (X) which have the following characteristics A Used in coronary artery diseases need activation first generation irreversible delayed onset affects WBC ... B Antithrombotic acts on PAR developed from natural precursor C

It is stated that little energy is involved in the distortion between square planar and tetra hedral configurations. Use the angular overlap model to test the statement with Co2 complexes in high and low spin states. Give a clear exposition of the calculation and discuss the results. The necessary tables are attached. 10 ,PERIODIEKE INDELING VAN

Which one is true?

The metal catalysed reduction of compound 5 affords a mixture of syn and antidisubstituted cyclohexanes. Me H2 Me Me Me Me Me 82 cis 18 trans The reaction proceeds via the formation of a carbocation which presents a mechanism for inversion of configuration at one of the carbons O The transproduct forms because H2 can also add across the double

For the coordination compound NI(NO2) a. Draw the structure. What is the coordination geometry of this structure b. Draw the frontier orbitals of the MO diagram for this complex ion using ligandfield theory. (These are just the orbitals that are most metal dlike in character) for these orbitals provide the symmetry label AND indicate whether they

Which of the following scenarios has the lowest relative uncertainty Select one O a. Delivering 35.50 ml of titrant with a 50 (0.05) ml class A buret. Ob. Delivering 15.40 ml of titrant with a 50 (0.05) mL class A buret. O c. Delivering 18.50 ml of titrant with a 25 (0.03) ml class A buret. O d. Delivering 5.40 ml of titrant with a 25 (0.03) mL

Given 12 67 write two ratios based on this equality. Given 1000mL 1L, write two ratios based on this equality.

A chemist adds 465.0mL of a 0.29/molL barium chlorate BaClO32 solution to a reaction flask. Calculate the millimoles of barium chlorate the chemist has added to the flask.

Identify the type (circle) of building block used (natural products)

Meo HN 0 OH Meo OH . l 20 29 29 21 19 E 22 COOH 15 HO 1 RH RCH3 2 RjCH3 R2H

A single extraction with 100 mL of CHCI3 extracts or removes 88.5 of the weak acid, HA, from 50 ml of aqueous solution. What is the partition coefficient, K. for HA at a pH 3.00 The K, for HA is 3.5 x 105

(6grades) A rectangular channel B (m) wide is to discharge (14,156.1 Ls) of water having a specific energy of (1.37 m) (a) Find the critical depth of this channel for the given flow. (b) Using n0.013, compute the critical slope of the channel. (c) Compute the minimum specific energy required to maintain a flow of (14,156.1 Ls). (d) Plot the

When the pH is below the pKa, is the buffer species more or less than 50% protonated? Please explain.

Preparation of Potassium Tris(Oxalato)iron(lll)Trihydrate, K 3 Fe(C 2 O 4 ) 3 3H 2 O. FeCl 3 + 3K 2 C 2 O 4 + 3H 2 O --> K 3 Fe(C 2 O 4 ) 3 3H 2 O + 3KCl (a) Place ~8.0 g of potassium oxalate, K 2 C 2 O 4 H 2 O, into a clean 100 mL beaker. Place a boiling stick in the beaker. Dissolve the solid in about 15 mL of water by heating gently using a

If 1.023 g of CaF2 (Ksp 5.3 x 1011) is placed in 750 mL of pure water, what mass precipitates

(a) Draw what the H NMR and 13C NMR spectrum for ONE of the compounds ONE of the boxes below would look like. Be sure to clearly label the Hs Cs in the compound as well as their signals in the spectrum (see D2L for example if youre not sure). cpd A cpd B cpd M cpd N cpd X cpd Y ,(b) Now give TWO very specific and easy to spot differences that you

This reaction involves an oxidation or Reduction?

This reaction involves an oxidation or NaCNBH,, HO reduction (circle one) pH 45 HO, cat. HCI HO, HO OH Daniel Romo Reaction Mechanisms Basic (singlestep) Mechanism Types (accounting for 80 of OChem is below) 1) For the following transformations involving one elementary step each i) Draw and on the atoms that are most electron deficient or

Complete the following table Kelvin Fahrenheit Celsius Part A 273.0 K 0.0C 37.0 F Complete the first row. 386.0 K Express your answer using one decimal place. F ,I Review I Constants I Periodic Table MISSED THIS Watch IWE 3.9 Read Section 3.10. You can click on the Review link to access the section in your e Text. Part B Complete the following

6. A 125 mL portion of pure water is mixed with 175 mL of 0.120 M KBr. What is the fon concentration of Br in the final solution

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 ,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

Explore a facecentered cubic unit cell. av2 Unit cell Cube face (3 of 6 We will now determine the percent of the unit cell that is occupied by the four atoms it contains. Assume a unit cell is composed of spheres with a radius of 1 cm. What is the volume taken up by the four atoms inside the unit cell

Reaction of oxygen and hydrogen always smooth at every at every temperature and pressure Select one O True False

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

What is the major product of the following reaction COH HONO2 H2SO4

Draw the major organic product for the reaction. Draw the product. Select Draw Rings More CHO HgSO,, H20 H,SO, H OH

Draw and name the organic product of the reaction. Select Draw Rings More Erase CHCI HCI AICI,

What is the major organic product of the following reaction H,O, HSo, HgSo, OH IV 3D I and II II IV

What is the major organic product of the following reaction HO, H,SO, Hgso, OH I and II IV