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Computational chemistry-----What two predominant effects govern most chemical reactions and properties? What are the two major types of computational approaches used to model chemicals?
ch2 ch2 reacts with hydrogen gas to give ch3ch3 you need to estimate the heat released when bond enthalpies are h h
If the average fractional energy loss per collision in a material is 0.75, what will be the energy for a 1.98 MeV neutron after: A) 4 collisions? B) 19 collisions
a 295- flask contains pure helium at a pressure of 757 . a second flask with a volume of 460 contains pure argon at a
What are the most important energy considerations which determine whether or not this compound can be prepared?
a sample of gas occupies a volume of 364 ml at 1.28 atm and 27 oc. calculate the volume of the gas if its temperature
Calculate the pH of 0.099 M phosphoric acid (H3PO4, a triprotic acid). Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13
Predict the chemical formulas and IUPAC names of the missing reactants or products, to complete the following chemical reactions
Dehydration of 2-methyl-2-pentanol forms one major and one minor organic product. Draw the structures, including hydrogen atoms,
If the final concentration of CN- is 0.5 M at equilibrium, what is the equilibrium concentration of uncomplexed Fe3+ ions The Kr of Fe(CN)6 3- is 1.0 x 10^42
Calculate how long will it take for a sample of radionuclide with a half-life of 27.1 days decay to 1.0% of its original value.
calculate the energy (in kJ) of a photon which has a wavelength of a mircowave with a wavelength of 2.84 cm
Sketch the typical stress-strain curve for a metal and a ceramic. Using the sketch, indicate the following properties; elastic and plastic regions, yield points, Ultimate Tensile Strength (UTS), strain energy and fracture toughness.
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