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A ground state hydrogen atom n=1 absorbs a NM photon. what is the new value of "n"? (2). The excited state atom drops down to the n=3 state. What is the wavelength of the emitted photon? what kind of electromagnetic radiation is this?
How do the requirements that t and v are constant enter the derivation for delta Asys
Carbon dioxide and water vapor are produced when heptane (C7H16) combusts. How many grams of octane must be combusted in excess oxygen to generate 588-g of CO2
ethyl acetate is conveniently prepared by using ethanol as both solvent and reactant. explain why this procedure would
If the work function of a metal is 3.51 eV, what is the maximum wavelength of light that can be used to observe the photoelectric effect
The HCl molecule has a bond length of 127 pm and has partial charges of (+)(-)0.177e. What is the dipole moment of the HCl molecule in units of Debye (D)
an interference filter has an effective bandwidth of 10nm. would it be feasible to employ such a filter to isolate the
what is the PH of cocaine hydrochloride that results from neutralizing a 25mL aliquot of 0.0372M cocaine solution
At what temperatures is this reaction spontaneous at standard conditions. Assume that ?H° and ?S° do not depend on temperature.
a high pressure container of methane gas which exhibits an absolute pressure of 200 atms at a temperature of o c. a
A sample of an unknown gas with a mass of 3.24 g occupies a volume of 1.88 L at a pressure of 748 mmHg and a temperature of 20.0°C. If the unknown gas is composed of 2.78 g of carbon and the rest is hydrogen, what is its molecular formula
Explain this theary and how the shapes of simple molecules and polyatomic ions can be worked out using it. you will need to illustrate your account with a number of diagrams, in particular showing the difference typical shapes of simple molecules ..
A mixture consisting of .150 mol H2 and .150 mol I2 is brought to equilibrium at 445 degrees celcius in a 3.25 L flask. What are the equilibrium amounts
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