Bonding: 4sp Hybridization

How is it that 4sp orbitals are formed, as described in http://csi.chemie.tu-darmstadt.de/ak/immel/script/redirect.cgi?filename=http://csi.chemie.tu-darmstadt.de/ak/immel/tutorials/orbitals/hybrid/4sp3.html with 4s and 4p orbitals? Specifically, for a material like TiO2, where titanium has a configuration [Ar] 4s2 3d2, wh ...continues

Combining Element Names

Please help with these examples: Elements or Polyatomics Formula Name Li and SO4 CN and Ca Fe and Br I and Ba Hg and N

Non-Bridging Calcium-Oxide Ions

What weight percent of CaO should a glass be for 20% of the oxygen ions to be non-bridging, if the glass contains only SiO2 and CaO? Each calcium ion yields 2 non-bridging oxygen ions. The atomic weights of O, Si, and Ca are 16, 28, and 40, respectively.

Bonding and Compound Questions

1.) Do all ionic compounds dissolve in water, Do all covalent compounds dissolve in water? answer should be 50 to 100 words. 2.) Do the physical properties of water change when a compound is dissolved in water? If so, which properties change and why? 3.) Do all chemical compounds undergo each type of chemical reaction,i. ...continues

Bond Energies

How do I start problem below? Using the bond energies below, determine the value and sign of delta H for the Reaction: 2H-Br + F-F -> 2H-F + Br-Br Bond energies in kJ/mole: H-Br 362.3 H-F 565 F-F 154.8 Br-Br 190.0

Methanol: Structural formula/Enthalpy change calculations, etc.

Methanol (CH3OH) has been offered as a contender for alternative motor vehicle fuel for many years. In fact the technology of burning methanol in car engines, especially racing cars, has been use since the 1960s. Methanol (also known as wood alcohol) can be produced by the fermentation of biomass (naturally occurring organic mat ...continues

Help with isomers?

With C6H14... having trouble coming up with 3 isomers?

How can you tell if a substance can exhibit hydrogen bonding

I always get confused on these: can H2 exhibit hydrogen bonding I know CH3OH does exhibit hydrogen bonding the other one I'm not sure about is: C2H2 can this have hydrogen bonding?

Would water rise faster in rock candy or a glass?

Drilling a hole in rock candy, would this result in water rising faster than in a drinking glass?

Which electrical attractions result in surface tension of water

Which of these have the most surface tension CO2 CH4 NH3 thanks!

Can't find the specific kind of electrical attraction?

I can't tell if Van der Waals forces is the specific kind of elecectrical attraction that causes calcium chloride to dissolve in water or not?

What covalent molecules form hydrogen bonds & soluble in water?

Hydrogen bonds methane hydrazine formic acid these are the choices... can you help me decide?

Chemistry 100

I'm having trouble describing in enough detail: What parts of the calcium chloride are attracted to what parts of the water molecule when calcium chloride dissolves in water with the right kind of electrical attraction?

Single double triple bonding

Explain the characteristics of a single, double, and triple bonds including why they form and how the electrons arrange themselves.

Chemistry problem

If we assume that the energy-level diagrams for homonuclear diatomic molecules shown can be applied to heteronuclear diatomic molecules and ions, predict the bond order and magnetic behavior of: A.) CO+ B.) NO- C.) OF+ D.) NeF+

Chemistry problem

The nitrogen atoms in N2 participate in multiple bonding, whereas those in hydrazine, N2H4, do not. How can you explain this observation in light of the hybridization at the nitrogen atoms in the two molecules?

Molecular geometry and bonding

Molecular geometry and bonding

Moles Question

Consider this reaction: 2HI <--> H2 + I2 One mole of hydrogen iodide was placed in a reaction vessel and allowed to come to equilibirum. It was found that 0.2 mole of hydrogen iodide was left in the equilibrium mixture. Calculate Kc. 2HI <--> H2 + I2 Initial no. moles 1 <--> 0 0 Equil ...continues

I had t do molecule experiments using temperature changes

I answered the questions as I did the experiments, however I do not speak science and need help expounding on my explanations and also to make sure my assessments are correct. thank you!

VSEPR Model and Valence Bond Theory

Chapter 11 Homework: VSEPR and Valence Bonding 1.Select all the polar molecules. a. BrF5 b. BF3 c. PF6− d. IF4− e. NH4+ f. CH2F2 Select all the polar molecules. a. I3− b. IF3 c. TeF42− d. SeF4 e. ClO3− f. ClO4− ...continues

Categorizing Elements Based on Melting Points, Boiling Points and Molar Volume

A) which of the elements are likely to be metals? b) which elements are gases at STP? c) which element is most likely to be a non-metallic solid? d) which elements are liquid at 200 degrees celcius? e) which elements are likely to conduct well in the solid form? For each do you mind explaining why the answer is th ...continues

Chemical Bonding : Effective Charge

The iodine monobromide molecule, IBr, has a bond length of 2.49 Angstroms and a dipole moment of 1.21 D. a) Which atom of the molecule is expected to have a negative charge? b) Calculate the effective charges on the I and Br atoms in IBr, in units of the electronic charge e.

Reactivity of Xenon and Other Noble Gases

Question 1 Kn1 knowledge and understanding of atomic and molecular structure, chemical bonding, chemical formulas, chemical equations, mole calculations and the mole concept and the relation between elements of the Periodic Table. Ky1 use mathematical skills appropriate to the study of science at this level, in particular: n ...continues

Crystal lattice energies vs. solubility - zinc oxide and boric acid

Hello: I need help understanding the relationship (if any) of the lattice energy of compounds such as ZnO vs. H3BO3 vs. their respective solubilities. For instance, at neutral pH and standard conditions, I'm trying to understand why ZnO is much much less soluble in water than is H3BO3 --- is it possible because of a differ ...continues

Why does SF6 exist, but OF6 does not?

Why does SF6 exist, but OF6 does not?

Ionic and covalent bonds story

Please help me with some ideas for this assignment - I will write it myself, just need some ideas: I need to create a creative story that uses the concepts and shows understanding of ionic and covalent bonds.

SO^4+

We are asked to construct an energy level diagram (molecular orbital) for the molecule SO. We are then asked to comment on the ionic species of SO - bond order, bond distance etc. So far so good. Then we are asked the bond order of SO^4+ (assuming that it is formed). I have laboriously drawn out the whole thing (not attached ...continues

Molar volume of Dioxygen

How do I calculate the molarity of a solution that is 3.0% hydrogen peroxide by weight (3 g H2O2 / 100g solution), assuming that the density of the solution is 1.00 g/ml?

Desribing molecular forces of C5H6O

CH2=CH-CH=CH-CH=O THREE double bonds. We are asked to describe the bond and angle terms of this structure. I am not confident about what it is - it looks like a ring structure and I have been unable to find it using familiar web searches. I am assuming that the bond terms are C-C, C-H, C=O and C=C I have yet to figure out t ...continues

Hess's Law of Heat Summation

When 39.5 mL of 0.525 M (H4)(SO4) is added to 39.5 mL of 1.05 M KOH in a coffee-cup calorimeter at at 23.50 C, the temperature rises to 30.17 C. Calculate the H of this reaction (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for ...continues