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(a) What are the similarities and differences between the 1s and 2s orbitals of the hydrogen atom?
(b) In what sense does a 2p orbital have directional character? Compare the "directional" characteristics of the and orbitals. (That is, in what direction or region of space is the electron density concentrated?)
(c)What can you say about the average distance from the nucleus of an electron in a 2s orbital as compared with a 3s orbital?
(d) For the hydrogen atom, list the following orbitals in order of increasing energy (that is, most stable ones first): 4f, 6s ,3d,1s, 2p.
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
What is the net pressure-volume work after all of the methane has combusted with excess oxygen and after the CO2 and H2O produced has cooled back to 23 oC at 1 atm pressure
Give two reasons why cyclohexane adopts the chair conformation rather than a planar structure
1. the analysis of a compound gives it composition as 31.6k 29.3cccl and 39.1 oxygen . determine the empirical formula
Gases diffuse faster compared to liquids because of the reason that the liquid molecules A. are held together by stronger inter-molecular forces.
The resonance of peak one as well as peak two on our old 200 MHz proton nmr spectrometer was 400Hz and 420Hz respectfully as shown below. Explain at what frequency will these protons resonate on our new spectrometer with the gigantic 18.0 Tesla Ma..
Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
If 2.55 g of NaOH were added to a 100.0 mL solution containing 0.10 M Ca(NO3)2, what concentration of Ca 2+ remains in solution?
Exothermic reactions are favored for the reason that they release heat to the environment. Would an exothermic reaction be more favored otherwise less favored if it were carried out within a superheated chamber and why
Presume that a pollutant enters the environment at a steady rate R as well as that, once there, its concentration decays by a first-order reaction. At long times the concentration of the pollutant turn into constant at some nonzero value.
Problem- Pure benzophenone freezes at 48.1degee c. A solution of 1.25g of biphenyl c12h10 molar mass=154.2g/mol) plus 25.38g of benzophenone froze at 16.8degree c. Calculate de Kf of benzophenone.
What is the concentration of the sodium ion (in M) in a solution of 0.607 M sodium sulfate
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