Chemistry Questions and Answers July 19, 2020

Part 2 Short Problems, show your work for credit 13. For the following ration a) identify the mechanism(s). b) use curved amows to show each cap is the mechanisms) c) draw all the product(s) and label as major or minor if needed. 19 points X HO

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Question 5 (1 point) How many lone pairs of electrons are around each oxygen in the most stable Lewis structure of oxygen gas (O) Oo 3 04,Question 6 (1 point) What is the bondorder of the oxygenoxygen bond in oxygen gas (O) 0 1 2 3 4

Name the element which has 26 electrons, 29 neutrons, 26 protons O Fe Ov Cs Cu Question 28 (1 point) Name the atom or ion with the following number of particles 78 electrons, 125 neutrons, 82 protons Pb4 Pb Pt Po2,Question 37 (1 point) The correct number of significant figures in the number 0.002320 is 07 4 3 ambiguous none of these

Question 33 2 Review Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have less energy and the same charge less energy and a different charge more energy and the same charge more energy and a different charge 1. 2. 3. 4

Convert 439 mm Hg to kPa. (1 atm 760 mm Hg 101.325 kPa) 03290 kPa 81.2 kPa O 578 kPa 58.5 kPa 7.50 kPa

Questions 1. State the number of significant digits in each of the following measurements. a) 35 s c) 0.5 s e) 23.0 s b) 30.5 C d) 20.5 cm3 f) 10.00 mL h) 0.015 g j)2.0 C g) 21.50 s i) 15.0 cm3 2. Perform the indicated math operations and round the answer to the proper significant digits. a) 50.6 g 50.050 g 50.231 g 1508819 Neptunium Nickel

The correct formula for lead (IV) oxide is Pb40 Pb04 Pb0 Pb02

Question 5 To verify the existence of Yu2 in your solution, one should first form a white precipitate by addition of NaCl. Next, the precipitate should dissolve with the addition of NaOH. Using chemical equations, describe the identity of the product formed in each step. (Your two steps should be after the addition of NaCl and after the addition

When a p20 pipette is set to 090 (read from top to bottom), the pipette will deliver O The volume is too small for this pipette. O 0.9 L O 90 L 0.009 mL

Pure caffeine has a melting point of around 235 C. Suppose after you isolated your caffeine from coffee, you found that your sample had a melting point range of 230.3 236.5 C. Would you conclude that your sample was pure or impure its pure because the range included the melting point of pure caffeine Oits pure because the melting point range is

In the redox reaction 2S 2 O 3 2 ( aq ) +I 3 ( aq ) ?S 4 O 6 2 ( aq ) + 3I ( aq ), if 18.75 mL of 0.2500 MNa 2 S 2 O 3 is needed forcomplete reaction with 15.00 mL of theI 3 solution, what is the molarconcentration of I 3 ? Express your answer using four significant figures.

Rutherfords gold foil experiment determined that A) neutrons are in the nucleus. B) electrons have a negative charge. C) most of the space in an atom is empty except for a concentrated area called the nucleus. D) protons and neutrons have about the same mass. E) neutrons have no charge.

What is the relationship between E and the equilibrium constant, K Select one O O O a. E b. E nF RT C. E nF RT log K In K RT nF d. E RT ln K In In K e. E RT ln K

You are renting a car which is reported to achieve 11.9 kmL. How many miles will you be able to travel on 11.0 gallons of gasoline

A)a recipe calls for roasting a cut of meat at 350 Fahrenheit what is the temperature on the Celsius scale B)what is the 316.15 Kelvin in units of the Fahrenheit

What is 316.15 Kelvin in units of Fahrenheit,Dimensional Analysis A recipe calls for roasting a cut of meat at 350. F. What is this temperature on the Celsius scale Notes

Sodium sulfate, Na2SO4 with a mass of 15 g is dissolved in 250 g water. What is the boiling point of the solution Kb for water 0.52 Cm a) 100 C b) 100.2 C c) 99.67 C d) 101.2 C c) d) O a) b),Fifty grams of an unknown nonelectrolyte solute is mixed with 2000 g of naphthalene (C10H8). The boiling point of the solution was observed to be equal to

If the Moon is 246,000 miles from Earth, what is the distance in kilometers (Given 1 mi 1.61 km) O 15,300 km O 0.000 006 54 km 396,000 km 3,960,000 km O 153,000 km

First estimation of atomic mass based on PhET simulation average mass of chlorine listed in the periodic table number of chlorine35 atoms number of chlorine37 atoms weighted average calculated in simulation (rounded to three decimal places) Question 6. (1 point) Second estimation of atomic mass based on PhET simulation number of chlorine 35 atoms

The solubility product of strontium fluoride in water is Ks =4.3310-9 at 25C. a. Calculate the molar solubility of a saturated strontium fluoridesolution assuming that you have an ideal solution and that allnon-dissociated strontium fluoride is a pure solid phase. b. Calculate the activity coefficient ? of the ions in yourstrontium fluoride

Select the best conjugate acid-base pairs for buffer solutionsat the given pH values, and answer the question about bufferpreparation for each case. Use a single "/" to separate the weakacid from its conjugate base. Enter subscripts as ordinary numbers.For ions, put the charge in parentheses. If a charge is greaterthan one, list the multiple first

Select the best conjugate acidbase pairs for buffer solutions at the given pH values, and answer the question about buffer preparation for each case. Use a single to separate the weak acid from its conjugate base. Enter subscripts as ordinary numbers. For ions, put the charge in parentheses. If a charge is greater than one, list the multiple

Question 9 What is the correct formula for diphosphorus pentoxide P204 P205 P305 2P05 O

Can someone explain why these are the answers, and why does acetone and water have hydrogen bonding intermolecular force? I thought that acetone doesn't have a hydrogen bond because there isn't a Hydrogen bonded to Nitrogen, Oxygen, or Fluorine

15. Intermolecular Forces For each row, select the best choice that answers the following questions. Lowest boiling point Highest boiling point Most soluble in water Most soluble in benzene (C6H6) O Cl O HI O CC14 O CH3OH H3C O CH3Br London Dispersion O DipoleInduced Dipole O HC1 NH3 O CaF2 CH3 a. Select the intermolecular forces present between

The solubility of platinum(II) hydroxide is 0.37 g100 mL of solution. What is the Ksp of Pt(OH)2 O 2,6 10 4 4.9 102 O 1.7 x 105 4.2 x 106 8.5 x 106,Which statement is true about the mixture produced when 2.249 g, 0.0150 mol, of CSOH is dissolved into 1.00 L of 0.0010 M Ca(NO3)2. Given the Ksp(Ca(OH)2) 6.5 106 The solution is unsaturated and no

Can someone please help me with correcting this resonance?Please help me to draw the resonance structures on CHEMDRAW and putthe correct arrows. Can someone also please help me with the resonance itselfbecause in figure 3 , an already positive oxygen looses morenegative electrons and therefore become more positive andthat is not possible for

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The standard molar enthalpy of formation of NH3(g) is 45.9kJ/mol. What is the enthalpy change if 9.51 g N2(g) and 1.96 gH2(g) react to produce NH3(g)? NOTE: The question is asking- Howmuch heat is released when the reaction is performed under thestated conditions. To answer the question, you must first determinewhich reactant is the limiting

What is the correct structure for this problem?

Click the draw structure button to launch the drawing utility. The structure below contains a charged carbon atom. Add the appropriate hydrogen atom(s) and lone pair(s) to the atom so that its valence matches the given charge. EST H edit structure

Prelab Questions to Consider (you do not need to answer these questions for credit but answering the questions beforehand may help you efficiently and successfully complete the experiment with a more thorough understanding of the material) 1. What is the structure of 1hexene 3,3dimethyl1butene 2. What do you expect the major and minor organic

A small amount of sodium chloride (NaCl) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.) A NaCl HO Use these sketches to answer the questions in the table

Calculate your percent recovery for both camphor and carotene. Using sublimation, a student attempted to separate camphor (mp 175177 C) from borneol (mp 206208 C) by sublimation at 120 C at atmospheric pressure. When no more crystals appeared to sublime, the student stopped and scraped the sublimed crystals from the centrifuge tube. The melting

Sulfur is directly below oxygen in the periodic table, butelementally they are very different with oxygen existing as adiatomic gas and sulfur as a S 8 molecularsolid. Describe the bonding for elemental oxygen and elementalsulfur. Using bond dissociation energy, explain why sulfur is notdiatomic, but oxygen is. Why is the bonding so different for

Strontium hydride reacts with water to produce strontium hydroxide and hydrogen gas SrH (s) 2 HO(1) Sr(OH)2 (aq) H(g) it 7.486 g Srl, is combined with 67.000 g HO, the reaction proceeds until all the SrH, is consumed. The hydrogen gas escapes to the environment, and the final weight of thes 74.149 g The remaining water is evaporated, leaving

The speed of light in a vacuum is3.00 10 8 m/s. What is the speed oflight in units of kilometers per hour? Group of answer choices 1.20 10 2 km/hr 8.33 10 1 km/hr 8.33 10 7 km/hr 1.08 10 9 km/hr 1.08 10 15 km/hr

Mg (aq) 461.96 456.0 117.99,SO (aq) 907.5 741.99 17.15,Substance MgSO4(s) AH (kJmol) 1278.2 AG (kJmol) 1173.6 S (JKmol) 91.6,You write out the equation for this chemical reaction HO MgSO4(s) a. Determine the following at 25C AH mol ASixn (molK) Mg2 (aq) SO2 (aq) b. Will this process be always spontaneous, always nonspontaneous, spontaneous at

suppose you have 2.50l of a substance with a density of 4.00 g/ml and you want to determjme the mass of the substance.

Suppose you have 2.50 L of a substance with a density of 4.00 gmL and you want to determine the mass of the substance. The calculation can be broken down into three steps. First, convert the volume from liters to milliliters. Then, determine the mass of the sample in grams. Finally, convert the mass from grams to kilograms. Show the unit analysis

Question 3 (1 point) How many valence electrons are in an N3 ion Question 4 (1 point) Chromium (Cr) is a(n) alkali metal alkaline earth metal transition metal O halogen noble gas A

Sugar (C12H22O11) is a molecular compound that stays together inwater, while NaCl and MgSO4?7H2O are ionic compounds that dissociate into cations andanions as illustrated in the NaCl example below: NaCl(s) Na+(aq) + Cl-(aq) When 1 mole of solid NaCl is added to water, 2 moles of ions arereleased when the solid NaCl dissolves. Ions and molecules

Sulfuric acid is a very strong acid that can act as an oxidizingagent at high concentrations (very low pH, or even negative pHvalues). Under standard conditions, sulfuric acid has a lowreduction potential, SO42?(aq)+4H+(aq)+2e??SO2(g)+2H2O(l), +0.20V which means it cannot oxidize any of the halides F2, Cl2, Br2,or I2. If the H+ ion concentration

QUESTION 9 If the temperature is 20 C, what is the corresponding temperature on the Fahrenheit scale O22 F 94 F 43 F 68 F 239 F 4 points 4 points Saved Save Ans

If a strong base is titrated with a strong acid, the pH at the equivalence point is 7.0. What would be the best indicator for this titration

Strontium (Sr) is element 38 on the periodic table. A sample contains 5.77x1025 atoms of Sr. Calculate the amount of Sr. Submit mol Sr Show Approach Hide Tutor Steps

199 TABLE 5.2 Data and Results for Specific Heat of Metal 1 Metal (Hot Water) Initial Temperature, T E 64.931 70 70 Trial 1 2 3 Calorimeter Initial Temperature, 7. (C) 20 20 20 Mass of Metal (2) Identity of Metal 1 64.93) 64931 Average Specific Heat of Metal Standard Deviation Percent Error Exploring General Chemistry in the Laboratory Calorimeter

Objectives 1. Determine the empirical formula of a bydrated compound 2. Practice writing detailed observations in the laboratary 3. Practice calculating mass percent composition. Mass of crucible. 20.7689 calculations Q4. 3.89 24.592 Q5. Signature Sofymonial). badag 24.592g Measurements Of crucible CuSO4 Mass of crucible crucible w cu sog (ny

Standard deviation, significantfigures and +/- uncertainty: Using the following set of weights ingrams to determine the avergae mass , standard deviation and the mass +/-uncertainty . Please show all your work and report youranswer to the correct number of significant figures. 24.9298 24.9292 24.9227 24.9456 24.9081

Sodium hydroxide, NaOH, is a strong base that is sometimes usedas a cleaning agent since it can be used to dissolve proteins,grease, oils, and fats. Rank the following in increasing order oftheir molarity. Rank from lowest to highest. To rank items asequivalent, overlap them. 6.625 g NaOH dissolved in 250. mL of water 63.0 g of NaOH dissolved in

Table B.1. pkar and pl values for the 20 common amino acids. The amino acids in bold type are ionisable. Amino Acid Alanine Arginine Asparagine Aspartic acid Cysteine Glutamine Glutamic acid Glycine Histidine Isoleucine Leucine Lysine Methionine Phenylalanine Proline Serine Threonine Tryptophan Tyrosine Valine Abbreviation Ala Arg Asn Asp Cys Gln

tungsten mass: 1.48 kg (density of tungsten = 19.25 g/cm 3 ) convert to cm^3

The time dilation equation from Special Relativity is this t Here, t time in the external viewpoint, t time in the moving viewpoint, vvelocity and c speed of light, 3.0 x 108 ms. 7. Say 1 second goes by in the external view while the moving railcar goes by at 90 of the speed of light. How long does that 1s take on the railcar (ie. what is t ift

What is the theoretical oxygen demand (ThOD) of a solution containing 5mg / L toluene, C 7 H 8

Question 8 What is the theoretical oxygen demand (ThOD) of a soation containing 5 mgL toluene, CyHg 0156 1 pts

Toluene (C 7 H 8 , molar mass = 92.13 g/mol)an organic compound often used as a solvent in paints is mixed witha similar organic compound benzene (C 6 H 6 ,molar mass 78.11 g/mol). Calculate the molarity,molality, mass percent, and mole fraction of toluene in2.00 x 10 3 mL of solution that contains 75.8 g oftoluene and 95.6 g of benzene. The

The trend in second ionization energy for the elements from lithium to fluorine is not a regular one. Predict which of these elements has the highest second ionization energy and which has the lowest and explain. Of the elements N, O, and F, O has the highest and N the lowest second ionization energy. Explain.

This is the data below help please

Seliwanoff s Test (for ketoses and aldoses) Observation VS Water Glucose Fructose Sucrose Lactose Starch Unknown Conclusion (ketose, aldose, or inconclusive),Test educing Sugars Benedict s Test Oservations blue water Glucose Fructose brown red etoses and Aldoses Seliwanoff s Test bservations (color clear light ter 1 minute) pink Termentation

Toronto is 231 miles from Detroit. It took 4.0 hours to drive there. The speed limit is 85Kph. Did the driver exceed the speed limit? Explain how you determined this. Describe the calculation steps you did to determine this, what was your result?

The total oxide ion charge in a formula unit of CoO is 2. What is the charge on each cobalt ion The total oxide ion charge in a formula unit of CoO3 is 6. What is the charge on each cobalt ion The total oxide ion charge in a formula unit of CoO is 4. What is the charge on each cobalt ion

In Trans-1,2-dichlorocyclohexane, the diequatorial conformationof the Cl groups is less stable than the diaxial conformation, butin cis-1,3-dichlorocyclohexane, the diequatorial conformation ismorestable than the diaxial conformation, as we would typicallypredict. Draw the two chair conformations for the 1,2 and1,3-disubstituted cyclohexanes and

Three structural isomers have the formula C, H2. Draw and name the isomers using IUPAC names. Use a hyphen () where necessary, not an endash (). Draw the isomer with 5 carbon atoms in main chain. Select 2 Draw H Rings More Erase Q2 Q,Name the isomer with 5 carbon atoms in main chain Draw the isomer with 4 carbon atoms in main chain. Select Draw

The substance neon has the following properties Use the References to access important values if needed for this question. Choose all that apply normal melting point 24.5 K normal boiling point 27.1 K triple point critical point A sample of neon at a pressure of 1.00 atm and a temperature of 53.7 K is cooled at constant pressure to a temperature

Use the Cockcroft-Gault equation to estimate the creatinine clearance for a 55 year old female patient who is 5'4" tall and weighs 334 lb with a reported serum creatinine value of 1.2 mg/dL. Use the Cockcroft-Gault equation to estimate the creatinine clearance for a 33 year old male patient who is 5'9" tall and weighs 256 lb with a reported serum

In this titration orange juice is used as the acid in place of HCI. That is because most fruit juices are acidic, with citric acid (H,C,H,O,) being one of the more common acids, especially and not surprisingly in citrus fruits. One big difference between citric acid and HCI is that citric acid is triprotic, meaning it has three protons (H) to

What are the units of the rate constant (k) for a reaction whose kinetics is described by the rate law Rate k PA (PB)2 where P and PB are partial pressures of reactants A and B, respectively. torr521 torr2 S1 torr32 S1 torr121 torr2 S1

A world class marathoner runs at 11.5 mph (miles per hour). Is this greater than 20 kmh 1.000 km 0.6214 mi 11.5 mph is equivalent to 18.5 kmh therefore it is NOT greater than 20 11.5 mph is equivalent to 23.0 kmh, so this IS greater than 20 11.5 mph is equivalent to 7.15 kmh, so it is NOT greater than 20 O 11.5 mph is exactly equal to 20.0 kmh

determine the unknown chemical compound

11 10 HSP00002 9 8 7 6 ppm 5 3 2 1 0,Open Background 40 20 58 NO M 78 26 REEEEE 34 72 4000 BY0000 1400 Sample 3000 ViewDisplay Settings Process Dashboard 1100 3000 Mencity 2000 Search Preview Sale Configure Add to Library 1430 Help Check 200 Waterc Mew Say 200 Abst www Adva HE Apm wwww syd Makit a Pali style ww INIM IRS The inte,Unknown 74gmol

Write the formula and Lewis Structure for the inorganicionic compounds, as well as for cholesterol and sucrose. Describethe reconstitution process including sketches (4-hydroxybutyl)azanediyl)bis(hexane-6,1-diyl)bis(2-hexyldecanoate) 2[(polyethylene glycol)-2000]-N,N-ditetradecylacetamide 1,2-distearoyl-sn-glycero-3-phosphocholine cholesterol

- White light spectrum a. Howdoes the spectrum of white light differ from the spectrum ofhydrogen, neon and sodium? b. Whatcolor corresponds to 5.7 x 10 -7 meters?_____________________________ - Hydrogen Emission Spectrum There are several lines with colors and 3lines which are white. Thewhite lines are in the infrared region and not visible. a.

Write the chemical equation for the reaction of the weak acid HCN with water. Include phases. This is what I got, but it is not correct: HCN (aq) + H 2 O (l) CN - (aq) +H 3 O + (aq)

Weight of empty 125 ml Erlenmeyer flask 88.9 g Weight of Erlenmeyer flask with water filled to the neck 237 g Data Table (Mg) Mass of Mg (g) Volume of flask (ml) Maximum pressure (kPa) Initial pressure (kPa) Pressure change, Delta P (kPa) Temperature (K) Data Table (Unknown) Mass of unknown metal (g) Volume of flask (ml) Maximum pressure (kPa)

Useful Equations qsys0 qrxn qheating qC (Tf Ti) CAT Csolution ( C1) MH2O (g) x SH20 (1g1 C1) qheating (Csolution Ccal) AT Exp. A Use the data from Procedure A to compute your calorimeter constant. Be sure to use the correct initial and final temperatures for example, when cooling hot water, Tf will be less than Th and the term Tf Th will

would you predict trifluoromethanesulfonic acid, CF3SO3H, to bestronger or weaker acid than methanesulfonic acid, CH3SO3H? Explain your reasoning.

Which statement about "chemically active extraction" is incorrect ? It depends on the acid-base properties of the compound. Organic acid is more soluble in organic solvent, while organicbase is more soluble in water. When organic acid reacts with NaOH, the salt formed is moresoluble in water. A neutral organic compound tends to dissolve more in

Write the balanced equation and K a expression for the Bronsted - Lowery acid H 2 AsO 4 -- in water?

Help TALLER 69.400 g HO Add water to the cup and heat a block of metal. Use the balance to measure the mass and the thermometer to measure the temperature. Click Reset to start over. Metal Mystery Reset

Write the Lewis structure for CHCHCHO and determine the number of sigma and pi bonds in the molecule. Sigma bonds Pi bonds

Water has a density of 0.997 g ml and milk has a density of1.026 g ml (at 20 degrees Celsius). If you had .454 kg of each(approximately 1lb.) what would be the volume (in L) of the water and milk be?

Write the complete (total) ionic equation showing the mixture ofaqueous magnesium chloride and aqueous sodium carbonate. (Includestates-of-matter under the given conditions in your answer.) A) MgCl2(aq) + Na2CO3(aq) ? 2 NaCl(aq) + MgCO3(s)

How would you complete the hydrolysis with HCl, H2O, Heat in the second part of this reaction?

HNO3 HSO4 NO HCI, HO heat Ho ARH QN 6

please write clearly

Write the cell notation for an electrochemical cell consisting of an anode where Mg (s) is oxidized to Mg2 (aq) and a cathode where Fe (aq) is reduced to Fe (aq) at a platinum electrode. Assume all aqueous solutions have a concentration of 1 molL and gases have a pressure of 1 bar. Submit Answer 0,Write the cell notation for an electrochemical

Use the Alberta Chemistry Data Booklet to calculate the cell potential of the following reaction. Pb(s) 2SO4(aq) 4H(aq) HSO3(aq) PbSO4(s) HO(1) Record three digit answer, two decimal places (ie. 1.23) and include the sign do not include units in your final answer. A

Using the following data Substance HCI(g) HO(1) 62 kJ SOCl(g) HSO4(1) Determine the value of AH in kJ for the following reaction SOCl2(g) 2HO() 2HCl(g) HSO4(1) 1934 kJ 62 kJ AH (kJmol) 92 1934 kJ 286 364 814

1. a. b. Zinc is a metal with the chemical formula of Zn. It has many applications such as used in alloys, brass, nickel silver and aluminium solder. Justify the reason of physical properties for Zn below. 1. il. iii. i. ii. High melting and boiling point iii. Good conductors of electricity and heat Malleable and ductile The surface area and

Calculations 1. Determine the molarity of your EDTA solution. Since Zn reacts with EDTA in a 11 mole ratio the moles of EDTA will be equal to the moles of Zn. For a solution, moles can be determined by multiplying molarity by volume. mol EDTA mol Zn MEDTAVEDTA MZn2VZn2 rearranging the equation above we get MEDTA MZn2VZn2 VEDTA 2. Determine an

1) What is the conjugate acid of HS - ? - S- - H2S - H2S- - S2- 2) What is the conjugatebase of HS - ? - H2S- - S- - S2- - H2S 3) Match the following baseswith the correct conjugate acid. PO4^3- a) H3O+ HPO4^2- b) H2O H2PO4- c) PO4^3- H2O d) HPO4^2- HO- e) HO- f) H2PO4- g) H3PO4 4) Given the following acid/base equilibrium assign each species

1. Dinitrogen pentoxide (N2O5) decomposes to NO2 and O2 atrelatively low temperatures in the reaction 2N2O5(soln) 4NO2(soln) + O2(g) This reaction is carried out in a CCl4 solutionat 45 C. The concentrations of N2O5 as a function of time arelisted in the table. Plot a graph of the concentration versus t, ln(natural log) concentration versus t, and

M D) 1 30) What is the oxidation number of bromine in the BrO3ion A) 5 B)1 C) 7 here reduction takes place in an electrochemical cell. E) 3

1 ATP = 7.3 kcal/mol Total calories = 1769 = 1.769 KCal. 7.3KCal = 1 mole ATP 1.769 KCal = 1*1.769/7.3 = 0.2423 moles of ATPHow do I now convert this into number of molecules of ATP?

If 0.5 mole of glucose weighs 90 g, what is the molecular massof glucose? B. What is the concentration, in grams per liter (g/L), of a0.25 M solution of glucose? C. How many molecules are there in 1 mole of glucose?

1. Convert the following to km a) 1600.0 m b) 2050 cm d) 23000 m e) 0.4210 dag f) 0.129 cm g) 56450 CL 2. Convert the following measurements. a) 10.034 mJ b) 0.050 cm c) 0.0325 kJ a) 36 C km b) 12 C km K K cJ mm m dg mm c) 1.030 hm d) 2450 dm hL 3. Convert the following temperatures. h) 36.45 CL i) 1024 g j) 1202 ml k) 2.65 km 1)

1 The boiling point of a compound does not depend upon a) Solubility of the compound in water b) Hydrogen bonding c) Size of molecules d) Polarity of the molecule d ite

1) In coordination chemistry, the donor atom of a ligand is (a) a Lewis acid. (b) the counter ion (c) the central metal atom. (d) the atom in the ligand that shares an electron pair with the metal. (e) the atom in the ligand that accepts a share in an electron pair from the metal 2) The bond between the metal and the ligand in a complex is best

1. What is the correct IUPAC name for the following compound CH3 CHCHCCCHCH3 CHCHOH A) 3methyl4ethyl3hexen6ol 4ethyl3methyl3,6hexenol B) C) 3ethyl4methyl3hexen1ol D) 3methyl4(2hydroxyethyl)3hexene E) 3(2hydroxyethyl) 3methyl3hexene 2. Which is a correct IUPAC name for CH3CHOCHCHCHOCHC A) 1,4Dioxane B) Ethylene glycol diethyl ether C)

do mechanism

H.00 CH3CHCN CI 1. (CH3)2CHBr, Mg, ether 2. H3O 1. (CH3)2CHBr, Mg, ether 2. H3O 1. LIAIH4, ether 2. H30

A. What is the electron-pair geometry for C in CH3-? fill in theblank 1 There are fill in the blank 2 lone pair(s) around thecentral atom, so the molecular geometry (shape) of CH3- is fill inthe blank 3. B. What is the electron-pair geometry for C in CH2O? fill in theblank 4 There are fill in the blank 5 lone pair(s) around thecentral atom, so the

1. Balance this equation. NaHCO3 + H2SO4 --> NaSO4 + H2O +CO2 2. what is the mass of CO2 released if 625 mg of sodium hydrogencarbonate is used on a spill containing 210mg of sulfric acid ?

1. Calculate the Molarity (M) of an EDTA solution if 3.722 g ofNa 2 EDTA2H 2 O are dissolved in 1.0 L of water.(Na 2 EDTA2H 2 O, MM = 372.24 g/mole) Show yourwork! a) A 5.00 mL tap water sample was measured out with a volumetricpipette, and added to a 25 mL Erlenmeyer flask. It was thentitrated with a 0.0100 M Na 2 EDTA2H 2 O solutionand found to

. Which of the following is true about CO2? a. It is a gas at room temperature . b. It is a nonpolar molecule. c. It is one of the two products made by the complete combustion of any hydrocarbon . d. All of the above are true

do all parts please

1. Pyrophosphoric acid, H4P207, is a polyprotic acid at 25C, K1 1.2x101, Kaz 7.9x10, K3 2.0107, K4 4.8x1010. a. (2 marks) 25.0 mL of 0.25 M solution of H4PO7 is titrated with 0.25 M NaOH. What is the pH after 100.0 mL of NaOH is added b. (2 marks) A buffer is made by adding 540 mL of 1.0 M NaHP07 to 210 mL of 1.0 M NaH3P07. What volume of 1.3

1. What is the pH of 0.01M HCl solution? ???? Ans. 2 2. What is the pH of 0.02M HCl solution????? Ans 1.7 3. What is the pH of 0.01M NaOH solution? ?? Ans. 12 4. What is the pH of 0.02M NaOH solution????? Ans. 12.3 5. What is the concentration of the HCl solution if the pH is 3?? Ans. 0.001 M 6. What is the concentration of the HCl solution if the

Predict the major product(s) of the following reactions.,1) AIH(iBu)2 2) H3O TO

1. What is the oxidation number of Nitrogen in Aluminum Nitrate Show all work 2. Which species is the oxidizing agent in the reaction CrO72 (aq) CH5OH(aq) Cr(aq) CO(g) HO() 3. Given Cu 2e Cu, E 0.34 V NO3 4H 3e NO 2 HO, E 0.96 V calculate the value of E, in volts, for the reaction Show all work 4. For a spontaneous electrochemical

1. The freezing point and boiling point of acetone are 178.5 K and 329.20 K, respectively, or, 138.5F and 132.89F, or 321.21Ra and 592.56Ra on the Rankine scale temperature scale. a. Derive an equation for calculating the temperature on the Fahrenheit scale from the temperature on the Rankine temperature scale. Show your work. b. The boiling point

1. Sodium phosphate dissociates when it dissolves inwater. Na 3 PO 4 (aq) --> 3Na + (aq) + PO 4 3- (aq) If the concentration of theNa 3 PO 4 solution is 0.033 mol/L,what is the concentration of the sodium ions? a. 0.011 mol/L b. 0.033 mol/L c. 0.066 mol/L d. 0.099 mol/L 2. Scandium sulfate,Sc 2 (SO 4 ) 3 (aq) ,dissociates when it is dissolved in

11. Draw the atomic structure for the sodium atom. Clearly label the nucleus, electron levels, and the location and number of all protons, neutrons, and electrons (please list the total number of protons and neutrons, and draw the electrons in their orbitals). Refer to chapter 2 of your textbook for help.