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Suppose that hydrogen atoms are prepared in the n=2 energy level. calculate the wavelength of light emitted by these excited atoms when returning to the ground state.
Discuss the differences observed in the IR and NMR spectra of 3-nitrophthal-hydrazide and luminol that are consistent with reduction of the nitro function to an amino group in this experiment.
experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?
At room temperature, the equilibrium constant, Keq is approximately 3. Calculate the number of moles of reactants and products expected in the equilibrium mixture of this reaction
what is the empirical formula for a substance if a 1.000 g sample of it contains .262 grams of nitrogen 0.075 grams of hydrogen and .663 grams of chlorine?
How many moles of silver metal are produced in 1.2 hours by the electrolysis of AgNO3(aq) using a current of 6.0 A
A bowl of 464 g of water is placed in a microwave oven that puts out 776 watts (J/s). How long would it take in seconds to increase the temperature of the water from 12.0oC to 46.0oC? Use SF.
4-chloro-1,4-dimethylhexanol is treated with heat, please show products
Draw the electron dot formula for each of the following molecules or ions: a) H2O; b) CCl4; c) H3O^+; d) SiF4; e) CF2Cl2; f) C2H6 HH
Why do you wash the ether layer with sodium carbonate? 4. Why is this experiment more expensive than the Fisher esterfication process? When is this method perferred?
calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
How many liters of softened water, containing a sodium concentration of 5.8×10^-2% sodium by mass, have to be consumed to exceed the FDA recommendation (less than 2.4 g sodium per day)? (Assume a water density of 1.0 g/mL.)
what purpose does the addition of bromine serve in the procedure described for the isomerization of dimethyl maleate
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