Chemistry Questions and Answers June 21, 2020

All the student are advise to reply the following queries, keeping in view the mention system description title as Dream Home branch offices case study. (a) List the details of branches in a given city. (b) Identify the total number of branches in each city. (c) List the name, position, and salary of staff at a given branch, ordered by staff name.

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Caroline is an unmarried single mother of a 14 year old son in 2021. Caroline's spouse and the son's father, Frank, died during 2019. Caroline's Adjusted Gross Income for 2021 is 60,000. Caroline's itemized deductions are $9,000. What is Caroline's computed Income Tax Liability for 2021 BEFORE CONSIDERING ANY TAX CREDITS? You will need to consult

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Your client is having trouble figuring out where all her money goes each month. Here is her financial information for you to review MONTHLY VISA BILL 355 CHECKING ACCOUNT BALANCE 825 STOCKS IN BROKERAGE ACCT 5,500 QUARTERLY AUTO INSURANCE (NOT YET DUE) 450 MASTER CARD BILL 245 ANTIQUE COIN COLLECTION 3,250 MONTHLY PAYCHECK (GROSS) 3,000

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4. The following data were found in a determination of chromium in water. The protocol was to run a blank, the sample, and then the sample with two standardaddition spikes. Three replicate runs were made for each sample. Incidently, this was all done automatically using a computercontrolled instrument. The significantly different responses to the

You are teaching a class of second graders some chemistry, and they are confused about an objects mass versus its density. Keeping in mind that most second graders dont understand fractions, how would you explain these two ideas and illustrate how they differ? What examples would you use as part of your explanation?

Given a 0.100 M solution of anserine at its isoelectric point and ready access to 0.100 M HCL, 0.300 M NaOH and disnilled water, deseribe the proparatioe of Lor0.03 Enserine buffered solution, pli 7,.20. Volume of stock solotion needed ml Volunte of 1HCI needed to adjust the imidazole group ml. Volume of HCI needed to titrate the amino group ml

b. 50 ml of 10 mM K Phosphate buffer, pH 7.2 c. 50 ml of 0.010 M NaCl,4) You are given the following 0.5 M KH2PO4, 0.5 M K2HPO4, solid Tris base, solid TrisHCl, and 3 M NaCl. Calculate how you would prepare of each of the following a. 50 ml of 10 mM TrisCl pH 8.0

2. Calculate the molarity of the resulting solution if 0.629 grams of Hydrogen ion H is dissolved in 250 mL of distilled water. 3. Calculate the pH of the solution considered in question 2. ,Concentrated hydrochloric acid (HCI), or muriatic acid as it is called in industry, is available in a concentration of 12 M. It ionizes to yield one acid

The compound BaTiO 3 has a perovskite structure. Considering the following ratio of radii: (R (O 2- ) = 0.146nm, R (Ti 4+ ) = 0.071nm, R (Ba 2+ ) = 0.113nm, Na = 6.023x10 23 mol-1, Patm (Ba) = 137.33 g / mol ; Patm (Ti) = 47.88 g / mol; Patm (O) = 15.99 g / mol; b) Determine the lattice parameters of the unit cell c) Determine the planar density

Ti Ba (101) d 2a

LiF has a pK sp of 2.77. HF has a pK a of 3.17. LiF is dissolved at 0.250 F after addition of strong acid. What is the pH of the 0.250 F LiF solution?

A gas reservoir with bulk volume of 5000 acreft, porosity of 25, and water saturation of 5. There is no oil in the reservoir. The reservoir is at pressure 5000psia and temperature 210F. The compressibility factor at reservoir conditions is 0.9. The gas reserve is Bscf

Use the table of water density at different temperatures to determine the theoretical density of water based on the temperature recorded in Part II. Enter it below, including all seven decimal places provided in the table, then calculate the percent error for density using the graduated cylinder. Temperature of water recorded in Part II: 23.0C

Using your knowledge of intermolecular forces, explain your experimental results for he following a. Salicylic acid and water b. Salicyclic acid and methanol c. Ascorbic acid and water d. Water and methanol vs. water and 1octanol e. Acetone and water vs. acetone and hexane f. Water and methanol vs. water and diethyl ether

1. What is the standard for comparison of an unknown mass with the hanger balance? 2. What is the standard for comparison of an unknown mass with the digital electronic balance

A certain substance has a heat of vaporization of 32.29 kJmol. At what Kelvin temperature will the vapor pressure be 7.50 times higher than it was at 285 K T K

Differentiate ammonium hydroxide from aniline in terms of a. boiling point b. alkalinity C. solubility in ethyl alcohol d. stability towards heat

Calculate the pH of the solution that results following addition of 29 mL of 1.0 M NaOH to 40 mL of 1.0 M NH4C1. Express your answer to two decimal places.

Estimate the p I of a dipeptide Cys-Asp assuming that the p K a values for -NH 3 + , -COOH, side chain of Cys and side chain of Asp are 8.0, 3.5, 8.5, and 3.9, respectively. Round your answer to one decimal place.

The selenium content in soil can be determined fluorometrically upon conversion of the selenium to the fluorescent product shown, followed by extraction in Se cyclohexane. Emission from the fluorescent product is observed at 518 nm. The selenium content in a 0.138 g soil sample was converted to the fluorescent product and extracted in 50.0 mL of

Directions: Express answers to the correct number of significant figures. Show all work.

5. Which of the following represent isotopes of the same element 34 B 79x C 78x 34 D 81x 35 36 A) A and D B) A and C C) B and D D) C and D 6. In which of the following sets do all species have the same number of electrons A) CF, Ar, Ca2 ) , N3, 02 C) K, Rb, Cs D) Br, Br, Br 7. In which of the following sets do all species have the same number of

A student is willingly to design novel and more active fluoroquinolone type antibiotics. Accordingly The esterification of position 3 carboxylic acid on the quinolone ring Il The replacement of methyl group with the fluorine on the 6th position of the quinolone ring III The annulation of position 8 carbon with the nitrogen on the 1st position of

Problem 4 (30 points) Assume you know the following initial ion concentrations and charges Intracellular Extracellular Na Ch Proteins() separately. 100 mM 20 mM 80 mm, 80 mEq Na Ch Proteins() 100 mM 100 mM 0 mm, 0 mEq A) (10 points) Describe qualitatively in your own words how Na and Chions will flow across membranes to reach the GibbsDonnan

1. What is the AG for the hydrolysis of 1,3bisphosphoglycerate to 3phosphoglycerate and phosphate when the concentrations of 1,3bisphosphoglycerate, 3phosphoglycerate, and phosphate are all 2 mM 2. Calculate the AG for the hydrolysis of glucose1phosphate to glucose and phosphate when the concentration of glucose1phosphate is 5 mM, the

6. (10 The pH of a particular wastewater after traversing a 1.5mile force main (wastewater is pumped through a closed conduit rather than flowing via gravity in an open channel) was 6.1 and the total sulfide concentration (sum of the sulfide in H2S and HS) was 100 ppmm. At pH 6.1 the sulfide species are in a molar ratio such that H2S 10HS. This

What are the dynamite explosion measures?

2 Calculate the mass of Cu (At.wt. 63) that titrated iodometrically with I ,then the liberated I, () titrated with 20.0ml of 0.2M Na,S,0. 2 41 2Cul 21, 1325,03,06 31 Jubul al jisl A.0.127 g B. 252 mg Oc 126 mg O D.2 8 ndows

Finish the charts and make a graph on excel

Data (points showndata collected) Mass of weighing dish (g) Mass of weighing dish and sample (g) Mass of sample (g) Volume of water (mL) Volume of water and metal (mL) Volume of metal sample (mL) Density of metal sample (gmL) Average density value from calculation (gmL) Density value from manually drawn graph Density value from graph drawn on

Determine the volume (in millilitres) of 0.2 M sodium iodate, 0.2 M sodium bisulfite and deionised water required to prepare the two solutions needed to perform an iodine clock reaction that changes colour at 105 seconds. The final volume (once the two solutions are combined) should be between 1 L and 10 L.

What are the characteristics of electron mutations Ff

Mn225 spectral sentence ion base state 25 In two modes of sprained and low spin in an octagonal electrostatic field Express the permissible spin transitions in two cases using the given TanabeSogano diagram. The given electron spectrum corresponds to which of the two Is it spin mode Why Is it possible to draw the corresponding arrangement diagram

Regarding bonding A. A bond is described by the equation ETot 4 Differentiate and solve for the equilibrium bond radius ro in terms of A, B, and n. B. Experiments for a particular material show that the bonding energy is 5.0 eV for a bond length of 0.33 nm and n 9.0. What are A and B C. Sketch (or better, use a spreadsheet to plot) the

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

If you measure the melting point of a substance and get a meiting range of (1.19x102) 122.73 deg. C, what is the average melting point of the substance For units, use the capital initials of the temperature system used in the measurement, such as DF for dregrees Fahrenheit, not the correct answer of course.

a) Calculate the equilibrium PBoP302 ratio at 500C AO2 2BO(g) A 2BO2(8) b) Can AO2 be reduced under 80 BO and 20 BO2 gas environment AO2 A 02 AG474100 50T 2B 202 2BO2 AG211700 77.25 T (J) 2BO 2B O2 AG386400 55.60 T (J)

Calculate the amount of carbon dioxide dlissolved in one liter of soda pop if the manufacturer uses a pressure of 2.4 atm to carbonate the soda pop. Given o(H.O) 1g cm, M(ILO) 18 g mol, Ilenrys constant is equal to 6.04 x 10 atm and M(CO.) 44 g mol Explain the difterence between electrolyte and nonelectrolyte solution and provide their

Find the formula and structure.

11. mz Proton NMR d 7.7 (2H, d) d 8.1 (2H, d) M 201 100 202 6.7 203 98 4000 30 00 400 00 000 ce e00 140000 2000 1200 1000 1400 WAVEMUMBERS 100 149 100 10

(a) In an Argon plasma, the argon pressure is 7.7 torr at 350 K, and the electron density is 4.3 x 1012 cm3. Assuming a Maxwellian electron energy distribution with Te 2 eV, calculate the rate constants for elastic scattering, electronic excitation and electron impact ionization from the simplified crosssections given in the graph. Repeat you

Does a reaction occur when aqueous solutions of potassium acetate and sodium carbonate are combined Oyes Ono If a reaction does occur, write the net ionic equation. Use the solubility rules provided in the OWL Preparation Page to determine the solubility of compounds. Be sure to specify states such as (aq) or (3). If a box is not needed leave it

Which of the following statements in relation to structure A below is the most correct? choose an answer: a. The structure is a micelle. b. The structure is a steroid. c. The structure is synthesized from sphingosine. d. The structure is synthesized from squalene. e. The structure is a lipoid.

Parmi les propositions suivantes en relation la structure A cidessous, laquelle est la plus juste HC CH(CH2)12CH3 HCOH HC NH (CH2)11 H3C (H3C)3N A Veuillez choisir une rponse O a. La structure est une micelle. O b. La structure est un stroide. O c. La structure est synthtis partir de la sphingosine. 202 O d. La structure est synthtis partir

13. Aspen Plus uses RADFRAC with the Tray Rating option to do detailed heat and mass transfer design calculations and tray and downcomer design. Start by setting up the problem below with RADFRAC. 1. We wish to distill 80.0 mols of a feed at 25C and 15.0 atm. The feed is 0.100 mole fraction ethane, 0.300 mole fraction propane, 0.500 mole fraction

Describe the mechanism of action for each of the antacids, Be sure to indicate the base, the acid, and the product of the reaction. Antacid Neutralization A(OH) 3 HCI (slow) NaHCO, HCIE (fast) A. Aluminum hydroxide AICI, 3 H20 Al(OH)3 B. Sodium bicarbonate NaCl HO CO2 NaHCO3 Baking soda C. Calcium carbonate CaCOy2 HCI CaCl H20 CO2 (fast) CaCO3

The following data were collected for the reaction2 NO(g) C2(g) 2 NOCI(g) . NO (M) 0.150 Cl (M) 0.200 Initial Rate (Ms) 0.00475 Experiment 1 2 0.150 0.300 0.00713 3 0.300 0.200 0.0190 0.450 M and the initial Cl2 is Predict the initial rate when the initial NO 0.450 M. O A. 0.0962 Ms B. 0.00475 Ms O c. 0.0321 Ms D. 0.0721 Ms

What is the relative mean speed of N2 and H2 molecules in a gas at 25 C?

Determine the collision number and mean free path for air molecules in the stratosphere (T = 250. Kand density = 5.0 x 10-3 g L-1). The molar mass of air may be taken as 29.0 g, and the collisiondiameter as 3.72 .

Determine the number of collisions for air molecules in the stratosphere (T = 250. K and density = 5.0 x 10-3 g L-1). The molar mass of air may be taken as 29.0 g, and the collision diameter as 3.72 .

Explain the synthesis of alcohols.

(Intermedlate H,B H

2. The blood in the human body is flowing through a gas exchange vessel of length I and radius r inside the liver at absolute temperature T. The coefficient of viscosity n of the blood is also eventually measured. Also, consider the time rate of diffusion of oxygen carried to the gas exchange region in the liver tissue. Prove that the change in

find the molar solubility of Ag3Po4 in terms of OH and Kb, considering the following data pH 4.0 Kps 4.1 x103 13D 2.1 10 2 kp2 1.6 x 10 7 3D 3D 1.3 10 12

Calculate the heat change, AH, for the fornation of nitrogen monoxide from its elements Write the target balanced equation here Use these thermochemical equations 4NH(g) 30(g) 2Nfg) 6 HO(g) 4NH(g) S0(g) 4NO (g) 6H,O(g) AH 1530 kl AH 1170 kJ

Provide the major organic product of the following reaction. Br 1. Li 2. , 3. H3O

Provide the structure of the major organic product in the reaction below. 1. LAIH, (excess) 2. H,0 CHO

Provide the structure of the major organic product in the reaction shown below. NABH4 CH3 HOCH3

Provide the structure of the major organic product in the reaction shown below. 1. 2 CH3CH2CH,MgBr OCH2CH3 2. H30

Which statements are correct about production of syn gas for NH3 production A Water gas is a mixture of hydrogen H2 and CO2 B Hydrogen can be produced from natural gas by steam reforming C Hydrogen can be produced from hydrocarbon by partial oxidation D Conversion process is independent on the Scontent orthe gas mixtures E Acidic gases are removed

Determine the ventilation rate required to maintain the vapour concentration below the TLV at 500 ppm ideal mixing sample, which molecular weight is 62.31 lbmlbmol at 1 atm and 540.27 R, evaluation rate is 0.5 lbmmin.

For a secondorder reaction with k 0.0561 Ms what is the concentration after 850 seconds if the initial reactant concentration was 1.0 M Your Answer Answer units

6) Use both structures and words to explain why peptide bonds have restricted rotation. peptide bond R R H

Draw a 3D representation of CH,SCH, using atomic and hybrid orbitals, which shows all of the orbitals that are used to make each bond. Clearly label all atoms, bonds, and orbitals in your drawing.

Draw the resonance hybrid for the following ion based upon the given resonance structures. NH NH sCCH, scCH,

The equilibrium constant, K, for the following reaction is 1.8010 at 698K. 2HI(g) H,(g) I(g) If an equilibrium mixture of the three gases in a 18.2 L container at 698K contains 0.273 mol of HI(g) and 0.487 mol of H, the equilibrium concentration of I, is M. Submit Answer Retry Entire Group

A 92.0 ml solution of 0.200 M of AgNO, reacts with 175.0 mL solution of 0.201 M of NaCl to produce silver chloride (ASCI) and sodium nitrate (NANO,) according to the balanced equation AGNO, (aq)NaCl(aq) AgCl(s) NANO, (aq) Determine the limiting reactant for the given reaction. NANO, O NaCI OAGNO, O AGCI Calculate the mass of AgCl produced in the

Consider two systems that are identical in all respects, except that in one the molecules are distinguishable, whereas in the other the molecules are indistinguishable. What would be the difference between the molar entropies of these two systems Choose one a. 446.9 JKmol answer. b. 53.8 JKmol X C. There is no difference. X d. There is not enough

A chemist vaporized a liquid compound and determined its density. If the density of the vapor at 90.0 C and 753 mmHg is 1.185 gL, what is the molecular weight of the compound Given that R 0.0821 Latm(molK). 3D O 35.7 amu. O 47.7 amu. O 41.7 amu. O 38.7 amu. 44.7 amu. ,A sample of nitrogen gas is placed into a container at 200 K. If the

The central atom hybridization is spd2 in choose one. .... ....... SeF6 BRF3 SO,2 O NO3 O BF4 ,Which of the following elements has the highest first ionization energy O N Na O S ,Which of the following statements isare true (1) The formula of copper(II) hydroxide is Cu(OH)2 (2) The formula of aluminium perbromate is AI(BrO3)3 (3) The formula of

Which of the following has the highest heat of formation.

3 5.

Four fatty acids that belong to the w3 fatty acid family are shown in the following table Abbreviated name 183 204 225 246 180 180 Cis15,12,9 Octadecatrienoic Cis17,14,11,8 Eicosatetraenoic Cis19,16,13,10,7 Docosapentaenoic Cis21,18,15,12,9,6 Tetracosahexaenoic A. Explain why the acids are called w3. B. Draw the structure of the acid 204. C. In

A clinic took temperature readings of 250 flu patients over a weekend and discovered the temperature distribution to be Gaussian, with a mcan of 101.00 F and a standard deviation of 0.7140 F. Use this normal error curve area table to calculate each value. What is the fraction of patients expected to have a fever greater than 102.86 F fraction

Calculate the molar volume of carbon dioxide at 400 K and 30 atm, given that the second virial coefficient (B) of CO2 (44.01 g mol-1) is 20.0605 L mol1. Compare your result with that obtained using the ideal-gas equation.

Calculate the molar volume of carbon dioxide at 400 K and 30 atm, given that the second virial coefficient (B) of CO2 (44.01 g mol-1) is 20.0605 L mol1.

a) Consider Figure 1. Determine the magnitude and direction of the net gravitational force exerted on the 0.1 kg sphere. Why is the force from the smaller sphere is greater than the bigger sphere 5 marks b) A particle at rest is attracted toward a center of force according to the relation F mk x. Show that the time required for the particle to

Graph the function. Graph f(x)x1, fxsl 11x, ifx1 M 60 Select one E 7 Y,Find the requested value. 6x 1 ifx 5 5x if 5x8 56x ifx8 Select one a 35 Ob 29 OC 25 Od 31

What are the formal charges of the oxygen and carbon atoms in the resonance structure of OCN, given below Explain your answers. 0CNEN

5.1 Provide a detailed mechanism for the polymerization of styrene on treatment with BF3 in the presence of trace amounts of water. (6) 5.2 Calculate the number average molecular weight for a polymer sample which consist of 12 moles of polymer molecules having molecular weight of 48,000 gmol and 16 moles of polymer molecules having molecular

Give the latest technology on the harvesting of natural gas, petroleum and solar power. (5) 2.2 Give the 3 differences between a boiling water nuclear reactor and a pressurized nuclear water reactor. (6) 2.3 Draw a simple circuit and give brief explanation on how to harvest energy from a acidbases system. (5) 2.4 Give three fundamental functions

For the function f graphed in Figure 13, find the indicated limit or function value, or state that it does not exist. (a) f(3) (b) f(3) (c) lim f(x) 3 (d) lim f(x) (e) lim f(x) (f) lim f(x) 3 3 2 2 3 45 43 2 Figure 13 Figure 14 2.

(a) What is the molecular formula of salad dressing composed of just olive oil and vinegar? (b) Draw the molecular structure of salad dressing.

Lithium chloride has a meting point 878 K and a boiling point 1655 K Part A Convert melting point temperature to degrees Ceisius. Express your answer as an integer. Titing Submit Request Answer Part B Convert melting point temperature to degrees Fahrenheit. Express your answer as an integer. Tting F Submit Bequest Answer Part C Convert boiling

Water is added to 53.0 mL of a 1.30 M solution to give a volume of 228 mL. 114 mL is taken from that solution and 109 mL of water is added. Calculate the concentration of this final solution.

Suppose a biochemist has 10 mL of a 1.0 M solution of a compound with two ionizable groups at a pH of 7.50. She adds 10.0 mL of 1.0 M HCI, which changes the pH to 3.60. The pK, value of one of the groups is pK 4.00 and it is known that pkz is between 7 and 10. What is the exact value of pK2 3D Enter your answer to two significant figures.

Find out how to determine the thickness of this metal in cm. Answer is 0.044 cm. Find the size of one atom, then calculate how many atoms must be lined up end to end in the length of the metal. Metal Pb 0.009770 kg

The rate constant for a reaction of zero order in A is 0.0030 mol L -1 s -1 . How long will it take for the initial concentration of A to fall from 0.10 M to 0.075 M?

The lead content of a blood sample was determined using spectrophotometer using the calibration graph technique Consider the following data Y for unknown is 0.277 if (N 6), Intercept (b) 0.2593, Stdblank 0.0037, Xt 29 ngL, X calibration curve point 40 ngL, Slope (m) 0.0021, Stdsamples 0.0669, the lower limit of quantification (LLOQ) Select

The mass spectrum of 3-ethyl-3-methylheptane [(CH3CH2)2C(CH3)CH2CH2CH2CH3] shows fragments at m/z = 127, 113, and 85. Propose structures for the ions that give rise to these peaks.

Identify the compound based on IR and MS spectra.

Warelength Gimi 14 5 16 4000 3800 3400 3200 So00 200 2600 3400 200 2000 1800 1600 1400 1200 1000 600 Waranter 100 43 58 50 29 100 71 85 the 20 40 60 80 100 120 mlz

150 g of a 10% by weight Potassium Sulfate solution are electrolyzed for 6 hours and with a current intensity of 8 amperes, decomposing part of the water present. Determine the concentration in percent by weight of the solution after electrolysis. R = 11.20%

Given the above information, answer the following questions A) What is the crystal structure B) If the atomic radius is 0.08 nm, what is the APF C) If the atomic weight is 43 gmol, calculate the density. D) What is the linear density along the 110 E) What is the planar density of the (110) (101) (011) 090 (110) 0.39 nm 0.3 nm 0.253 nm

If a reaction has an activation energy of zero, how is AU for the forward reaction related to U, for the reverse reaction Sa Ua Ua Ua Attempts 0 of 2 used Submit Answer Ua If a reaction has an activation energy of zero, how is AU for the forward reaction related to Ug for the reverse reaction AU

The equilibrium between dissolved CO, and carbonic acid can be represented by H HCO, H,CO, CO2 H,0 Show that dt where K HJEHCO, H,CO,1. ,Step 1 of 4 The equilibrium between dissolved CO2 and carbonic acid can be represented by K12 H HCO5 H2CO3 k21 k31 CO2 H2O Give the expression for CO21 corresponding to the given equilibrium. (Assume that H,0

Retrosynthesis the chemical below basically solving this question backward so you would synthesize from eufyran back to the first chemical So you would do retrosynthesis of euryfuran back to 5-methyl-1 3-benzenediol with the step above

HO. 6. or 1 euryfuran

Which reagent will give you the following product Answer as letter choice only (i.e. D not D.) Br Br2 Br A

Indicate which of the amino acid residues in the following peptide sequence contains a group that has a positive charge for its most likely charge state at pH 10 . Arg - Lys - Ile - Val - Thr - Cys - Pro - Trp - Ser

A flask is charged with 0.120 mol of A and allowed to react to form B according to the following hypothetical gasphase reaction. A(g) B(g) The following data are collected. times (s) 40 80 120 160 moles of A 0.120 0.065 0.045 0.025 0.022 (a) Calculate the number of moles of B at each time in the table. 0 s mol 40 s mol 80 s mol 120 s mol 160 s mol

An electron is accelerated in a cathode ray tube and moves at a velocity of 3.0*10^6 km/hour. Calculate the kinetic energy of the electron. You can find the mass of an electron on the Table of Constants in the handouts. Express your answer in units of Joules (J)

Provide the correct IUPAC name for the compound shown here. H,C CH H2C

In Oxisols, Fe(III) substitution for Al is observed in kaolinite. Develop a balanced chemical reaction for the incongruent dissolution of ferri-kaolinite [Si4(Al1yFey)4O10(OH)8], assuming the principal weathering products to be goethite, gibbsite, and silicic acid

Choose the complex that has the stronger M=C bond. Is there a large or small difference in bond strengths? Explain. a)[Cp(CO)2(PPh3)Mo=CH2]+ -or- [Cp(CO)2(PPh3)W=CH2]+ b)[Cp(CO)2(PPh3)W=CH2]+ -or- [Cp(CO)2(PEt3)W=CH2]+

If the equilibrium pH of your favorite lake is 6.9, and the total carbonate concentration CT Co3 is 10^-3 M, what is the equilibrium concentration of each of the three carbonate species: H2CO3, HCO3-, and CO3-2 Assume a closed system, activity coefficients = 1, and T = 25 C. CT CO3 = [[H2CO3] + [HCO3]+ [CO3 ] .Report each of the three species'

Why was CoCl2.6H,0 used as starting in synthesis of Co(en)Cl3NaCl3H,0 and not CoCl3

Consider the electrochemical cell given by the cell notation below Hg(t) Hg,Ce(s), Kce(aq, satd) Fe2(aq), Fe(aq) Pt(s) Calculate the electromotive force of the above electrochemical cell if Fe2IFe 2.5 x 103. Ignore ys

Write the balanced net ionic equations for the following reactions. Include phases such as (aq), etc. If no reaction occurs, write No Reaction. a) 2 M NH3 and 0.1 M Mg(NO3)2 b) 0.1 M NAHCO3 and 0.1 M HC2H3O2 c) 0.1 M AgNO3 and 0.1 M NaOH