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Bonding

Bonding, Lewis Structures and Molecular Geometry

Consider the following elements and arrange them in order of increasing number of electrons depicted in electron dot symbols. Which one occupies the intermediate position in the series? P, Se, Si, I and B A. P B. B C. Si D. I Consider the following elements and select the one which has the smallest number of electrons

3 questions on vapor pressure, volatility, and H-bonding

Answer and explain 1) As the volatility of a liquid increases, its equilibrium vapor pressure? A) increases B) decreases C) remains the same 2) Which substance contains molecules that will not form hydrogen bonds? A) hydrogen B) hydrogen fluoride C) water D) ammonia 3) At what temp would CO2 gas be most soluble?

Average Bond Energies and Delta H: Example Problem

My text gives the example of the following reaction: H2(g) + Cl2(g)-->2HCl(g) / 2 moles HCl To break bond 1 mole H-H bonds x 432 kJ/mol = 432 kJ 1 mole Cl-Cl bonds x 240 kJ/mole = 240 kJ 432 + 240 = 672 kJ Energy released / bond making 2 mol H-CL bonds x 428 = 856 kJ bond breaking +672 bond making -856 net ch

Chemistry: Measurment, Conversions, Chemical and Physical Properties

Please see the attached file for the fully formatted problems. 1. If a muscle tissue sample is 125 microns thick, what is the thickness in inches? (Given: 1 micron = 3.94 x 10^-5 inches) 3. If a patient is injected with 0.500 L of I.V. liquid, what is the volume in quarts? (Given: 1 quart = 0.946 L) 5. BONUS (4 pts): Exha

Extraction of Benzoic Acid, Pre-Lab Questions

Please see the attached file for the fully formatted problems. The solution explains about the extraction of benzoic acid in the given solvents and how the nature of solvent can effect its solubility.

Nomenclature, Molecular Shapes and Bond Polarity

Please see the attached file for the complete problems. Problem 4.100. Select the more polar bond in each of the following pairs. Part A: C-C or C-O Part B: P-Br or P-Cl Part C: Si-S or Si-Cl Part D: F-Cl or F-Br Part E: P-O or P-S Problem 4.104 Classify each of the following bonds as nonpolar covalent,

Nomenclature and Bond Polarity

Please see the attached file for the complete problems. Problem 4.36.Write the correct formula for the following compounds. Part A. aluminum chlorate Part B. ammonium oxide Part C. magnesium bicarbonate Part D. sodium nitrite Part E. copper(I) sulfate Problem 4.40. State the number of valence electrons,

General High School Chemistry Questions

### Please refer to the actual attached document as everything is properly formatted and easier to see in the document. ### 1. For each of the following situations, identify those for which a reaction is likely to occur. For those that do occur, write a net ionic equation. a) A solution of lead(ll) nitrate mixed with a solut

Average Atomic Mass Naturally Occurring Neon

Please see the attached file. 1. Answer the following problems about gases. a) The average atomic mass of naturally occurring neon is 20.18 amu. There are two common isotopes of naturally occurring Neon as indicated in the table below. (i) Using the information above, calculate the percent abundance of each isotope. (ii)

Boiling Points and Intermolecular Forces

The 'normal' boiling point of a substance depends on the molecular mass, and the type of intermolecular attractions. Rank the following compounds in order of increasing boiling points, and describe the intermolecular forces which affect the ranking. a. H2Se b. H2S c. H2Te

Functional Groups and Intermolecular Forces

The functional groups determine the reactivity of their molecules because of their ability to direct the interactions of the overall molecule. - Choose two functional groups from chapter 11 or 12. For each functional group find a household product that contains the functional groups you chose (e.g. fingernail polish remover c

Boiling Points of Molecules

Based upon the strength of the intermolecular attraction and the relative molecular masses, rank the following in order of increasing boiling point from lowest to highest. For example, if B is lowest, A is the next higher, C is next, and D is highest, enter BACD. A) AsH3 B) PH3 C) SbH3 D) NH3.

OH Function in Alcohol

1) What is the major product of dehydration of an alcohol? 2) Why does the simplest ketone have three carbon atoms and no fewer? 3) An alcohol has an OH functionality in it. Do you expect it to be a base? Why, or why not? 4) Name the following: a) CH3CH2CH(OH)COOH b) CH3OCH2CH2CH3 c) C4H9O(C=O)CH3 5) When acetic acid re

Thermal Decomposition

Calculate the following: (a) Moles of malachite in 1g: Cu2CO3(OH)2 Cu= 63.55 x 2=127.1 C= 12.01 O= 16 x 5= 80 H=1.008 x 2= 2.016 (b) Moles of CuO produced: .72 g CuO produced (c) Ratio of moles of CuO produced per moles of malachite decomposed 3. Use the mole ratio of CuO produced per mole of malachite

10 Questions About Alkanes and Structural Diagrams

1) Which general formula applies to hydrocarbons with one double covalent between adjacent atoms? A. CnH2n+2 B. CnH2n C. CnH2n-2 D. CnH2n-4 E. CnH2n-6 2) The compound, 2-methyl-2-propanol, is an isomer of A. butane B. propane C. butanol D. propanol E. methanol 3) Which organic compound is an ele

VSEPR: Determining the Shapes of Molecules

1. Summarize in your own words the rules for writing Lewis electron-dot structures. Use and example of a simple molecule (not SO2, CO2, or H2O) to illustrate the application of these rules. NO3- . . 2. For the molecule you used in example in Question1 above, explain the reasoning in how the VSEPR theory would be used

Structure and Solubility of Zinc Borate

The plant that I work at uses a zinc borate (US Borax) compound whose chemical formula is 2ZnO-3H2BO3-3.5H2O ----- essentially a hydrated mixture of zinc oxide, boric acid, and water to form the granular zinc borate.We use it as a wood preservative and must keep it in an insoluble form in our process chemistry. My question ho

What is Zeta Potential?

Can you explain zeta potential in simple terms? If you haven't deduced by now, my study mates and I are all Chem Engineering grads from the early 80's and sadly have forgotten much of what we academically one knew....we are all now pursuing Master's degrees and it is a struggle re-learning much of this material. Also...we

Wood Preservatives: Polarity and Natrural Alternatives

Wood preservatives range from pentachlorophenol, to creosote, to chromated copper arsenate etc. etc. While most of these compounds are intended to deter rot and fungal decay of the wood, they also exhibit a significant water repellent characteristic? 1) What is it about these compounds that repels water? It may have something

Electron Configuration

The full electron configuration (1s^22s^2,etc..) for each of the following. Helium, Z = 2 Neon, Z = 10 Argon, Z = 18 Krypton, Z = 36 If you use the symbol of the previous noble gas to help indicate core electrons, help write the electron configuration for each of the following elements. Zirocnium, Z = 40 Vanadium, Z = 2

Stable Chair Conformations and E / Z Structures of Alkenes

1. Draw the most stable chair conformations for the following chemicals. Explain why you chose your answer. a) trans-1-ethyl-3-methylcyclohexane b) cis-1-ethyl-4-isopropylcyclohexane 2. Draw the structure of a) (2Z, 4E, 6-cis)-3-cyclopentyl-5-flouro-4-isopropylocta-2,4,6-triene b) trans-1-flouro-3-iodocyclopentane

Aluminum Hydroxide Formation

Could you please help me better understand the formation of aluminum hydroxide --- for instance: Again, lets assume we have a generally weak acid solution to which we add aluminum sulfate. The objective is to precipitate aluminum hydroxide per the following reaction which I believe to be correct. Al2(SO4)3 + HCO3- = 2Al(OH

The Law of Dulong and Petit states

The Law of Dulong and Petit states that the heat capacity per mole of many metals is approximately 6.0 calories per mole-degree C. Knowing that the specific heat capacity of three metals in Joules per gram-degree C is 0.45 for Fe, 0.24 fo Ag, and 0.13 for Au, do these metals agree with the law of Dulong and Petit? How do you kn

Conversion of Diamond to Graphite

The conversion of diamond to graphite is a spontaneous reaction and has increasing entropy. Explain why this reaction is not observed in jewelry stores and what might need to be done to make it occur - assuming someone wanted to make graphite out of diamonds.

Valence Bond Theory

In phosphine, PH3, the H-P-H has angles at 93.6 degrees. Describe the bonding of the molecule per valence bond theory.