Chemistry Questions and Answers July 18, 2020

Fill in the left side of this equilibrium constant equation for the reaction of benzoic acid (HC6H5CO) with water. K X

Number 10

NAD NADH Extinction Coefficient 260 nm Carotene Vitamin A 18,000 15,000 Why are data at two wavelengths needed to solve this problem 10. Ten grams of butter were saponified and the nonsaponifiable fraction extracted into 25 ml of chloroform. The optical density of the chloroform solution in a 1 cm cuvette was 0.53 at 328 nm and 0.48 at 458 nm.

Factors impacting employee absenteeism and the managers perception of its causes in the hotel industry The economic viability and success of a hotel depend on the optimisation of all resources, including human resources (HR). Absenteeism is an occurrence that can have a significantly negative impact on optimising HR in South African hotels in the

106 Experiment 14 Heat Effects and Calorimetry d. Find AH for the dissolution of 1.00 g NaOH in water. AHRxn 6036.25 4.98 e. Find AH for the dissolution of 1 mole NaOH in water. AHRXn 12 12.1 x 40gmol 2 AH (2121 kJg 48.484 kJmol f. Given that NaOH exists as Na and OH ions in solution, write the equation for the reaction that occurs when NaOH

Find the initial concentration of the [I - ] and[H 2 O 2 ] with the equationM 1 V 1 =M 2 V 2 . Treat each solution as being diluted from its initial volume and concentration to the total solution volume of 10mL.

test tube a test tube b Table 1. Quantities of reactants used at room temperature Volume of Reactant, mL Reactant 0.125 M KI 0.028 M Na2SO3 1 starch 0.225 M H2O2 1.0 M HSO4 Water Expt. 1 ML 1.00 1.00 0.50 2.00 1.00 4.50 Expt. 2 ML 2.00 1.00 0.50 2.00 1.00 3.50 mL Expt. 3 2.00 1.00 0.50 1.00 1.00 4.50 Test tubes used as reaction vessels must be

Find coordination number, oxidation no. of metal and charge on complex. 1.V(OH)6(NO3)3 2.(NH4) COCI4 3.Co(bipy)3Br2 4.K4Mn(CN)6 5. Co(P(CH3)3)42(SO4)3 6.Ni(NH3)4Cl 7. Fe(HO),NO

The following information is givenfor magnesium at 1 atm: T b = 1090.00 C H vap ( 1090.00 C) = J/g T m = 649.00 C H fus ( 649.00 C) = J/g Specific heat solid= 1.017 J/g C Specific heat liquid= 1.339 J/g C A 46.40 g sample ofsolid magnesium is initiallyat 636.00 C. If the sample is heated atconstant pressure ( = 1 atm), kJof heat are neededto raise

Which of the following elements are diatomic molecules at room temperature (All answers must be correct to get credit.) The following elements are diatomic molecules. 1A H2A Elements that exist as diatomic molecules. Select one or more a. tin b. nitrogen c. argon d. sulfur 3A 4A 5A 6A 7A NOF e. oxygen f. bromine H (g), N (g), F (g), O (g), Cl (g),

Which of the following is the correct structure ofdeoxyadenosine 5?-monophosphate. The structures of the baseadenine and the sugar, ribose and phosphate ion are providedbelow. A. B. C. D. E.

N NH Adenine HO. H H OH OH Ribose OH Phosphate ion

Everyone knows that helium makes your voice high pitched, but there is another gas with the opposite effect. It is composed of the elements Sulfur and Fluorine, with the molecular formula SF6. Lets assume that we perform a reaction in the lab at constant temperature and pressure and that both Sulfur (assume sulfur is monatomic in this state) and

Which of the following is the correct formation reaction forCaO(s)? In other words, which equation has a ?Hrxn value equal tothe ?Hf value for CaO(s)? Ca(s) 1/2O2(g) CaO(s) Ca2 (aq) O2(aq) CaO(s) 2Ca(s) O2(g) 2CaO(s) CaO(s) Ca(s) 1/2O2(g) 2CaO(s) 2Ca(s) O2(g)

i need an help please

Formulas, Sketch the Lewis structure on this column BeCl2 CH3F BF2 BeCh www OH ePair Geometry around. Central atom and Name (draw 3D shape) Molecular Geometry and Name (draw 3D shape and show lone pair around central atom if it exists) Focus

Given that the concentration of myosin is 21 pmolL and Rmax (Vmax) 208 pmol. L s, determine the turnover number of the enzyme molecule myosin, which has a single active site. Number

Given KSO4 MOLAR MASS CALCULATION Element Symbol No. of Atoms K S O X PERCENT COMPOSITION CALCULATION EMPIRICAL FORMULA X Atomic Mass Mass Contribution Molar Mass x 100 x 100 x 100 ,Directions 1. Complete the Molar Mass Calculation table below with the correct responses. 2. Element Symbol in the compound must be recorded in separate

(a) The Lewis structure for methane, CH4, is given to the right. Using the JSmol tool, identify which of the following would be a correct representation of the 3D structure of methane You may want to view axes on the molecule by right clicking then selecting style then axes. If you get lost in the menu of right click reset by reentering again.

Given the reaction and data below, calculate the equilibrium constant at 310 K and identify if the reaction is RF (reactantfavored) or PF (productfavored) at that temperature. H3O C5H0(1) C,H0(1) HO(1) C5HO(aq) 1.7, RF 1.7, PF 0.58, RF 0.58, PF HO(1) AH, (kJmole) 49 285.8 356 YOH OH C5HO(aq) 11 S (JKmole) 263 69.9 260

Fill in the blanks Half Reaction F(g) 2e 2F (aq) Cl(g) 2e 2Cl(aq) Br(g) 2e 2Br (aq) O(g) 4H(aq) 4e 2HO(l) Ag (aq) e Ag(s) Fe (aq) e Fe (aq) 1(g) 2e 21(aq) Cu2 (aq) 2e Cu(s) 2H (aq) 2e H(g) Pb2 (aq) 2e Pb(s) Ni2 (aq) 2e Ni(s) Lit(aq) e Li(s) Sn4 (aq) 2e Sn (aq) E(V) 2.87 1.359 1.065 1.23 0.799 0.771 0.536 0.34 0 0.126 0.28 3.05

H 2 SO 4 + NaOH -->Na 2 SO 4 + H 2 O -Balance equation -What mass of H 2 O is formed by this reaction?Answer in units of grams

Gas costs $0.96 per liter in Quebec City, Canada. What is theprice in dollars per gallon? Round to the nearest hundredth of adollar. Do not include units or a dollar sign in your response.

The electron configuration of silver (Ag) is[Kr]5s 1 4d 10 . According to my chemistry textbook, Ag is paramagnetic (attracted by magnetic field) because it has an unpaired electron (the 5selectron). However, various sources on the Internet classify Ag as being diamagnetic (unattracted or slightly repelled by magnetic field). For example,

In general, the boiling points of compounds down a group in the periodic table. The melting points and boiling points increasefor the hydrogen compounds of group 6A elements are in the table below. Melting Point (C) Boiling Point (C) H 2 O 0.0 100.0 H 2 S 82.0 60.0 H 2 Se 65.7 41.2 H 2 Te 49.0 2.2 Use your understanding of chemistry to propose an

3. Identify the chiral carbons in Dglucose Dglucose is shown here in its open chain form, also called a Fischer projection. Label carbon atoms which are chiral. The 6 carbons can be labelled C1, the aldehyde carbon at the top, then sequentially down the chain to C6. H N H H I glycine H CHOH 4. Chiral carbon in amino acids Identify the chiral

Which of the following structures represents the compound 1,3propanedithiol Multiple Choice O HSCHCHCH HSCHCHCH SCHCHCH HSCHCH(SH) None of the choices are correct.

HCl (hydrochloric acid) is a strong acid and CH3COOH (aceticacid) is a weak acid. If you mix 1.00 L of 0.0550 M HCl (aq) with1.00 L of 12.0 M CH3COOH (aq), what will be the final concentrationof [H+ ]? Ka for CH3COOH is 1.8 10-5 .

The halflife for the decay of uranium238 to lead206 is 4.50 x 109 yr. If a rock contains 0.193 mg of lead206 for each milligram of uranium238, how long ago was the rock was formed Hint Pb and U have different masses. (value 5)

Imagine an electron in the 5f orbital of a neutral atom. Decide how well each of the other electrons in the table below would screen this electron from the influence of the nucleus. electron An electron in a 5s orbital. An electron in another 5f orbital. An electron in a 2p orbital. An electron in a 2s orbital. screening effectiveness (pick one)

Human body is 70 water by mass. Explain why water inside human body helps to maintain a moderate body temperature, irrespective of the summer or winter. 2

?H for the dissolution of sodium hydroxide in water is -44.4kJ/mol. the temperature of 240.0 ml of water in a coffee-cupcalorimeter was measure 23.0 C. If we add 10.1 g of solid sodiumhydroxide to the calorimeter. What is the final temperature (C) ofthe solution upon dissolution of all sodium hydroxide in water?(Specific heat of liquid water is

im performing the "hot ice" experiment worh sodium acetate. I've acheived the correct results and my solution crystalized upon adding a dmall sodium acetate seed. I'm asked to write the equation for this exothermic chemical reaction and this is where I need help. I have a picture below that's a pretty poor guess. please help!

Sodium Acetate CH3C00 Natt disturbance heat CH3C00Na (5)

The formula for calculating standard cell potential is Et E . Note For this equation, E values are for the reduction half reactions, and the minus sign above is because oxidation is the of reduction. Table 17.2 shows standard reduction potentials, E. Notice that all of these are REDUCTION reactions. Work through Example 17.4. In a galvanic cell,

Identify the BrnstedLowry acidbase pairs in each of thefollowing equations: A.H3PO4( a q )+H2O( l )???H3O+( a q )+H2PO4?( a q ) acid H3PO4 conjugate acid H2PO4? ;base H2O conjugate base H3O+ base H3PO4 conjugate acid H2PO4? ;acid H2O conjugate base H3O+ acid H3PO4 conjugate base H2PO4? ;base H2O conjugate acid H3O+ base H3PO4 conjugate base H2PO4?

Iodine has an electronegativity value of 2.5. Given theelectronegativity of C, N, O, and P (2.5, 3.0, 3.5, and 2.1,respectively), which of the following molecules has nonpolarbonds? Cl4 NI3 IO2 PI3 none

Does HCN have any resonance structures? Isomers? Show using Lewis Dot diagrams. Show a variety of possible structures andhighlight the most likely structure using Formal Charges.

2. A baby named Sally weighs 7 pounds, 11 ounces while her cousin, Greta weighs 3.4 kilograms. Which baby is heavier (Given 16 oz 1 lb, 2.2 lbs 1 kg) 3. A 12 ounce can of soda costs 55 cents while a 500 ml bottle sells for 69 cents. Calculate the cost per ounce for each. (1 oz. 30 ml) 4. The drug cocaine may be lethal at a dosage of 1.8 cg per

A marathon is 26.2 miles How many km is this ZCO

The Ksp values for AgCl and Mg(OH) 2 respectivelyare 1.0 x 10 -10 and 1.2 x 10 -11 . Whichof these sparingly soluble salts is actually moresoluble? Please include the equilibrium reactions equation,the reaction's I.C.E. chart, and the expression for thesolubility product.

Identify the conjugate base of formic acid (HCOOH). HCOO HCOO COOH HCOOH, Complete the balanced equation for the reaction that occurs when formic acid (HCOOH) dissolves in water. Please include the state of matter for all chemical species. HCOOHaq) HO(1) Dont forget to include charges on ions and the appropriate state of matter for each chemical

Hydrates are ionic compounds that have incorporated water molecules as part of their crystal structure. The mole ratio of water molecules to one unit of the ionic compound is constant, just as in other compounds. Determine the formula and then calculate the percentmass of water in iron (III) chloride hexahydrate.

You are the leading chemist af Dedlee Stuph Ltd-a majormanufacturer and supplier of arsenictrioxide (As2 Oa), used in the production of colourless glass.

You are the leading chemist at Dedlee Stuph Ltd a major manufacturer and supplier of arsenic trioxide (As2O3), used in the production of colourless glass. You suspect that the latest lot off the line is not pure arsenic trioxide. You take 3 separate samples of approximately 0.15g and analyze them as follows Quantitatively transfer each mass to

ken00726 Deniece Miranda Attempt 1 Question 4 (3 points) Given (7.32x106) grams of glucose, C6H12O6, calculate the grams of carbon dioxide, CO formed upon complete oxidation of the glucose. C6H12O6 6 026 CO2 6HO Express your answer in three significant digits as grams. Note Your answer is assumed to be reduced to the highest power possible. Your

For a high extraction drug (e.g. metoprolol) administered IV to an elderly subject with reduced hepatic blood flow, which of the following is/are INCORRECT: Clearance of metoprolol stays the same because high extraction drugs behave like a low extraction drug when administered IV Clearance of metoprolol stays the same because high extraction drugs

Four different liquids are poured 1 point into identical measuring cylinders. The diagrams show the depths of the liquids and their densities. Which liquid causes the largest pressure on the base of its measuring cylinder 2.0gcm 10cm O C B O D O A B 1.6gcm 20 cm 1.2gcm 30 cm 0.7gcm 40 cm

The level of water in an Olympic size swimming pool (50.0 meters long, 25.0 meters wide, and about 2.00 meters deep) needs to be lowered 2.50 cm. If water is pumped out at a rate of 6.80 liters per second, how long will it take to lower the water level 2.50 cm 363051.47 sec

If you are making cookies and the recipe calls for 1 tsp ofbaking soda, but you only have baking powder, would 1 tsp of thebaking powder leven or cause your cookies to rise the same as 1 tspof baking powder? Explain.

How many grams of adipoyl chloride (1.25 g/mol) are in 20 ml of a 2% (v/v) solution?

complete the following please, everything is given to complete

Identifying Stereocenters or Chiral centers 4. Identify the chiral centers in the following molecules, asterisk () them determine the number of stereoisomers (2). Compounds HO HO H HN HN HN CH CH NH OH OH CHO H OH HO H CHOH OH of chiral carbons of stereoisomer (2)

The literature melting point of acetylsalicylic acid is 134136 C (SigmaAldrich SDS, 02282015) and the melting point range of the recrystallized product is 124.5125.2 C. Is the recrystallized acetylsalicylic acid pure A. The compound is pure because it has been recrystallized. B. The compound is pure because it has a lower melting point than the

Isolation and Purification of Trimyristin from Nutmeg Lab One can react glycerol and myristic acid to make trimyristin.For glycerol, myristic acid, and trimyristin, list the uniquefunctional group each of these substances possesses, and then listthe corresponding peaks for that group that would show up in aninfrared spectrum of the material. Be

The mass of one atom of silicon (mass number = 30, atomic number14) is 29.9738 amu. What is its mass deficiency? Masses ofsubatomic Particles: electron 0.00055 amu, proton1.0073 amu, neutron 1.0087 amu 1.742 amu 1.757 amu 0.275 amu 0.413 amu 0.272 amu

Methane, ethane, propane, and butane are gases at room temperature, while pentane, hexane, and heptane are liquids. In terms of ldf, why does boiling point of hydrocarbons increase as more carbons are added to the molecule a) Molar mass increases and boiling point increases because the molecules are heavier and more likely to be liquids b) As the

Mothballs are composed primarily of the hydrocarbon naphthalene(C10H8). When 1.022 g of naphthalene burns in a bomb calorimeter,the temperature rises from 25.884 ?C to 31.068 ?C. (I already found?rU is -3323 kJ in Part A ) PART B) Find ?rH for the combustion of naphthalene at 298 K.Express your answer using four significant figures. 2) How much

Below is a molecular orbital diagram for O. Label the atomic and molecular orbitals and fill in the electrons. Sketch two bonding and two antibonding orbitals in the provided boxes and identify which MOs they correspond to in the MO diagram. (8) E Is O diamagnetic or paramagnetic and is this consistent with the Lewis structure. (1)

a) The molar solubility of calcium fluoride, CaF2, is 2.1 10-4 mol L-1. From this we can calculate the Ksp of CaF2 to be a) 9.3 10-12. b) 1.9 10-11. c) 3.7 10-11. d) 8.8 10-8. b)What is the molar solubility of calcium fluoride, CaF2 (Ksp = 3.9 10-11 ), in a 0.10M sodium fluoride, NaF, solution? a) 3.9 10-9 b) 1.0 10-9 c) 1.0 10 -5 d) 2.2

Luster The appearance of a minerals surface in reflected light is its luster. Light reflects from the outermost surface of a mineral lattice to produce a metallic luster, which has a mirrorlike quality. Some of the many examples of minerals with a metallic luster include gold, silver, copper, pyrite, and galena. Metallic minerals are often subject

(12. The following data apply to the drug Rohypnol (fluni trazepam), FW 313.39mol,log P pka 2.1 1.8 Structure CH F t12 plasma 3hr t12 elimination 1635 hr Answer the following questions a. Assuming a typical dose of 1 mg, what would be the expected concentration of unchanged drug in a urine sample of 25 ml b. If the LODLOQ for this drug in a mass

What is the molarity of thesolution? (molarity = moles per liter.)

7. A solution is made by adding 35g of NaCl to 1000mL of water. a. How many moles of NaCl have been added to the water 1 mol NaCI 58.44 g NaCl 35 g NaCl x 0.60 mol NaCl b. What is the molarity of the solution (molarity moles per liter.)

What does it mean that flame is nonluminous it is yellow it is invisible It has a very bright blue inner cone it is dark,what will be in the crucible during the first heating nothing magnesium water magnesium oxide,When will you be weighing an empty crucible and lid Owe do not weigh empty crucible at the very beginning after adding water after the

The names of polyatomic ions often need to be memorized. However, ionic compounds with polyatomic ions must still be neutral. Charges are balanced the same way as compounds with single atom cations an anions, such as LiF. Each ionic compound name will correspond to a single formula. Polyatomic ion name Ion Ammonium NH4+ Nitrite NO2? Bicarbonate

Ammonium chloride NaNONHCl Na2(CO3)2NH3 Cl KHPO4 K3PO4 NaNO NaHCO3 Submit Request Answer Sodium bicarbonate Potassium phosphate Sodium nitrite Reset Help Compound not listed

Normal body temperature is 98.6F . Convert this temperature to the Celsius and Kelvin scales Select one a. 37C and 310C b. 40C and 200 c. 35C and 200C d. 30C and 300C

What is the name of the compound with the formula FeCO3 What is the name of the compound with the formula SF4 What is the formula for ammonium nitrite What is the formula for sulfur trioxide

What is the molar mass of nitrogen gas A) 14.0 gmol B) 28.0 gmol C) 6.02 x 1023 gmol D) 1.20 1023 gmol E) 22.4 L A B C E

2. A 25.0 g sample of nitrogen gas, N, has a volume of 50.0 L and a pressure of 635 mm Hg. What is the temperature of the gas Work Check 3. How many molecules of gas will fill a 30.0 gallon trash bag at 25 C and 760. mm Hg (1 L 1.06 qts 1 gal 4 qts) 4. Aerosol containers can be dangerous if they are heated because they can explode. Suppose a

Name the following branched alkanes HECH CH HCCHCH HC CH CH CH CHCHCH CH HCHCH, CHCH CH CH CH A HCCH CH CH CHCHCHCH CH, CH C CHCH CH HCCH C CHCH CHCH CH Naming Alkanes Worksheet 1 CH HCCH C CH CHCHCH, CH CH CH CH CHCHCH CH CHCH HCCHCHCHCH CH HCCH C CH CH CH CH 1 HCCHCHCHCCHCH

The following table shows the production of an economy for two goods (X and Y) and their respective prices from 20152018. Suppose the base year is 2015. Price per Unit of X Price per Unit of Y Year a b C d e 2015 2016 2017 2018 Production of X 20 21 22 23 5 10 15 20 Production of Y What is nominal GDP for 2015, 2016, 2017 and 2018 What is real GDP

An object with a mass of 0.255kg and density of 2.89 g/cm^3 measures 34mm in length and 46 mm in width. What is the height of the object?

if Possible also thr Net Dipole moment of N2O

No net polarity CO is nonpolar. CO is a linear molecule with two equivale 0c0 Polarity of bonds in NO NN Dipole with negative at N bonded to O and N NO Dipole with negative at O An error has been detected in your answer. Check typos, miscalculations etc. before submitting your answer. Submit Submit Answer Try Another Version v 10 item attempts rem

Nomenclature with Derivatives. Give the formula for each or give the name for each one. 1. calcium hydrogen carbonate 2. sodium nitrite 3. chlorine gas 4. ammonium sulfide 5. cobalt(III) oxide 6. calcium bisulfate 7. magnesium sulfite 8. zinc acetate 9. potassium bromite 10. barium chloride 11. potassium hydrogen phosphate 12. ferric chloride 13.

What is the number of moles in 4.4 ml of 2Bromopropane (d1.31 gml, MM122.99) 1.4.7 moles O2.0.47 mole O 3.0.047 mole 4.0.0047 mole

Please explain your answer. Always give thumbs here ????

5. 6. 7. 4. Name the following branched alkanes 1. 2. 3. H3CCH Naming Alkanes Worksheet 1 H3CCHCHCHCH CH CH3 H3C CH H3C CH HC H3C CH CH CH CH3 HCCH T CH3 HCCHCH, CH CH3 CH3 CH CH3 CH3 CH3 CH CH3 CH CHCH,CHCH2CH3 CH CH CH3 CH CH3 CH CH CH CHCHC CH CH3 CH3 CH CH CH3 CHCH,CHCH3 CH CH CH3 (over)

The name of the alcohol from which the ester shown was formed is OA) propan1oic acid. B) pentan1ol. C) pentyl propanoate. OD) D) propan1ol.

Is o-toluic acid soluble in H2O? In ether? In 10% aq. NaOh? If it is soluble in NaOH, provide the complete acid-basereactions including electron movement arrows.

One mole of cadmium (6multiply10 23 atoms) has a mass of 112grams, as shown in the periodic table on the inside front cover of the textbook. The density of cadmium is 8.65 grams/cm3. What is the approximate diameter of a cadmium atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in

What makes a good leaving group 4. Some reactions are more sensitive to the identity of the leaving group than othersthat is, they require what we call a good leaving group (well explore exactly what that is next). Based on your knowledge of ratedetermining steps in SN1SN2E1E2 reactions, which do you think would be more dependent on having a good

Use the following answers for Questions 637 AA O AB BC Bion BD DA AC BE AD le a SH DB NH NH dsst CCA DE none of these,89. Which one is an ester 1011. Which one is an aldehyde 1213. Which one is an ether 1415. Which one is a secondary alcohol 1617. Which one is an acetal made from acetone 1819. Which one would react with HCI to make a salt, but

In order to gain one pound of body weight, the average personmust consume 3500 more calories than he/she uses. Assumingyou are totally sedentary and burning no calories, how manychocolate bars would you need to eat to gain 5 pounds?

A soil profile is shown in the following figure. GWT is at tabelay the ground surface. Sand Clay Sand GWT Middle of clay Layer Sand Clay e 0.6 1.2 Yd Ysat (kNm) (kNm) 17 20 18 The clay is normallyconsolidated with Ce0.5, C, 0.1, cv 1.0 m yr a) Assuming that the GWT is originally at the ground surface, calculate the initial total and effective

Your patient gets a prescription for 62.5 mcg (micrograms, mg)of digoxin in liquid form. The label reads 0.0250 mg/mL. How manymilliliters of digoxin should you give?

Perform each of the following conversions, being sure to set upusing dimensional analysis and clearly showing the appropriate conversion factors with properunits in each case. 0.501 km to centimeters 254.3 g to kilograms 2.75 kg to grams 2.75 kg to pounds 2.75 kg to ounces 534.1 g to pounds 1.75 lb to grams 8.7 oz to grams 45.9 g to ounces

Part A Draw the Lewis structure of PH3. button before clicking on the molecule. To add bonds connect atoms with a line To add lone pairs, click the Draw the molecule by placing atoms on the grid and connecting them with bonds. Include lone pairs of electrons and hydrogen atoms. View Available Hint(s) 2 Q H QQ O N S P LA F Br CI g I X More,Part

A. Designate the RS configuration for any chiral centers in the following molecules. B. H HN H 25. 1. 28. 4 22. 7. 16, 13. 19. 10 HO H Br HO HO HO 0. H Br H OH H Bri H CH3 H OH NH Answer key correct but Entor in movie for 16. H CH H OH H CH H CH HNH 20 H CH, H CH .H CI 2. 5. 8. 11. 14 20. 26 17. HCO H HN H OH H CH H OH H HO 23, HC NH H CH, H

What is the pH of a solution of 0.650 M K2HPO4, potassium hydrogen phosphate? What is the pH of a solution of 0.450 M KH2PO4, potassiumdihydrogen phosphate? Ka1= 7.5*10^-3 Ka2= 6.2*10^-8 Ka3= 4.2*10^-13

Explain the answer. Oxalic acid,, H 2 C 2 O 4, is apoisonous substance found in raw spinach. If oxalic acid has a C-Csingle bond and no C-H bond, draw its Lewis dot structure. (You maydraw bonds as lines, rather than dots, but include all lonepairs). Next, draw Lewis electron dot diagrams for the followingspecies, indicating formal charges, and

Oxalic acid, H2C2O4, is a poisonous substance found in raw spinach. If oxalic acid has a CC single bond and no CH bond, draw its Lewis dot structure. (You may draw bonds as lines, rather than dots, but include all lone pairs.) Draw Lewis electron dot diagrams for the following species, indicating formal charges and resonance diagrams where

Match each procedure of E1 experiment to its order. Azeotropic distillation A. Step 3 Washing with a base solution B. Step 2 Washing with water c. Step 4 D. Step 1 Drying the product E. Step 5 Short path distillation QUESTION 2 To set up the azeotropic distillation you have done the following initial steps. Step 1 You took a 25mL round bottom

Problem 1 Protein Nmyristoylation involves the covalent attachment of the fatty acid, myristate (CH3(CH)12CO), to the Nterminal glycine of a variety of cellular proteins. This type of reaction is one of many examples of a posttranslational protein modification (or PTM). This particular reaction uses myristatecoenzyme A (myristateSCOA) as a

PreLab Assignment Factors Affecting the Rate of a Reaction Name, Section 1. According to the Collision Theory, temperature and concentration are two of the four factors that influence the rate of a chemical reaction. What are the other two factors that influence reaction rate N 2. You will study the effect of temperature and concentration on the

Part 1 Mole Calculations with NaCl 1. Place your small beaker onto your balance pan and zero the balance, then add 1 tablespoon of salt (NaCl). Record the mass below, including the units. 18g Mass of 1 tablespoon of NaCl 2. How many moles of NaCl are in your sample Show your work below, using dimensional analysis and showing all units. 3. How many

Part I. Specific Heat Capacity of Zinc Mass of metal Temperature of 50.0 mL tap water Temp of hot metal (think) Final (maximum) temperature of water after adding hot metal Based on your data, calculate the specific heat capacity Cs of zinc following the steps below. 1) Calculate AT (Tfinal Tinitial) for the water upon addition of the zinc piece.

propose a synthesis for 2,5-dimethyl-hexan-3-one using 2-methyl-1-propanol as your only carbon source. This means that all carbons in your ketone target molecule must be shown to originally come from 2-methyl-1-propanol. You may use as many of these alcohol molecules as you want. You may also use other reagents and/or solvents.

Material chemistry

Problem 2.4. The tetragonal crystal system allows for 2 Bravais lattices, a simple tetragonal (P) and a bodycentered tetragonal (I). Show by simple geometrical construction that a facecentered tetragonal lattice is not a unique Bravais lattice and identify the actual Bravais lattice for this face centered tetragonal lattice. Problem 2.5. The unit

2. Molar mass of NaOH is 40 gmol. How many grams of NaOH do you have to take to prepare a. 1 L of 10 M solution of NaOH b. 1 L of 10 mM solution of NaOH c. 100 ml of 10 mM solution of NaOH

What is the product of the reduction of2-methyl-3-pentanone?

What is the direction, if applicable, of the net polarity for the following compound 074 O No net polarity F,D Question 2 What is the formal charge on the Nitrogen atom indicated with the arrow in the following compound ChCHyNNEN 00 01 02 O 1,Question 3 For the following reaction, what is the BronstedLowry acid p19 (CH)C0H K OH OA B D A B

Q1 - The valueof K sp for silver sulfide, Ag2S,is 8.0010?51. Calculate the solubility of Ag2S ingrams per litre. Express your answer numerically in grams perlitre. Q2- Lead thiocyanate, Pb(SCN)2, hasa K sp value of 2.0010?5. Calculatethe molar solubility of lead thiocyanate in0.800 mol L?1 KSCN. Express your answerwith the appropriate units.

QUESTION 1 In the Boyles Law experiment, you studied how the pressure of the gas sample changed when the volume of the sample changed. How did you change the volume of the sample O The volume of the gas sample was changed by moving a piston. The volume of the gas sample was changed by turning a valve. The volume of the gas sample was changed by

Provide the formula for barium sulfate tetrahydrate Ba(H20)4S04 2

provide a structure for the following set of spectra

Problem 4 140 120 Lm 100 PPM 80 PPM EN 5 60 HRMS gives a mass of 70.0783 which corresponds to CsH0 IR shows peaks at 3110, 2900 and 1640 cm. 40 20

Q5. A 9.5 g of aluminum bicarbonate, Al(HCO3)3, are completely decomposed to give Al2O3, CO2 and HO according to the following unbalanced equation AI(HCO3)3 Al 2O3 CO 2 HO If a student makes 5.2 g of CO 2 in an experiment, what is the yield

QUESTION 13 According to the FDA a sample of hand sanitzers are acceptable are Guard and Allora O Purity Advanced and Liten Foamy Lemon Blossom O Blumen and Guard O Assured Aloe and Allora Click Save and Submit to save and submit. Click Save All Answers to save all answers.,QUESTION 6 For hand sanitizers to work effectively you will need to Othere

Question 1 (1 point) What does the word aqueous mean dissolved in solvent soluble in water dissolved in water solid in water Question 2 (1 point) A chemical equation is balanced when the number of atoms on the left and right sides of the reaction are equal. the number of atoms on the left and right side on the reaction are not equal. the mass of

What is the pH of a 0.25 M CH3NH3I solution? (Kb =4.4 x 10-4 M for CH3NH2) pH = ___

Why is pentanol more soluble in water than pentane Select one a. Pentane is more flexible, allowing it to better fit in between water molecules b. Pentanol is a nonpolar molecule, while pentane is a polar molecule. Since pentanol and water have different molecular properties, pentanol dissolves in water. c. Pentanol is nonpolar like water and