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Calculate the Madelung constant for AgCl(s) given that the lattice energy is 912 kJ mol-1, and that the Ag-Cl distance is 277 pm. What crystal structure is this?
An electron in the hydrogen atom makes a transition from an energy state of principle quantum number n to the n=1 state. If the photon emitted has a wavelength of 95nm, what is the value of n?
Make the assumption that N2 molecules are in a 3-D box that is 4.5 m long, 3.5 m wide, and 2.25 m high. Treat them as particles. If the temp is 25 C, calculate the average energy per molecule.
Calculate the change in entropy for 1 mole of the gas undergoing this process. Does your answer make sense. Why or why not
the si unit of length is the meter which is defined as thelength equal to 1650763.73 wavelengths of the light emmitted
Describe the physical origins of linewidths in absorption and emission spectra. Do you expect the same contributions for species in condensed and gas phases
Problem- Dimethylamine, (CH3)2NH, a key intermediate in detergent manufacture, has a Kb of 5.9 x 10^-4. What is the pH of 1.5M (CH3)2NH2
Explain the heat of combustion for a sample of coal is 23.0kJ/g. Explain what quantity of coal (in grams) must be burned to heat 500.0 g of water from 20.0 degrees C to 95.0 degrees C. The specific heat capacity of water is 4.184 J. Is this answer..
Compound "A" (C6H14) gives three dissimilar monochlorides when subjected to photochemical chlorination. One of these monochlorides gives no reaction when treated with KOH/alcohol.
A line in the hydrogen spectrum has a wavelength of 434.5 nm. If this line results from the transition of an electron into the n=2 level explain what was the initial energy state of the electron
What is the freezing point of a solution that contains 12.0 g of glucose (C6H12O6) in 50.0 g of water (Kf = 1.86°C/m)
How much water would I need to add to 500mL of 2.4 M KCl solution to make a 1.0 M solution?
Estimate the enthalpy change for the combustion of one mole of acetylene, C2H2, to form carbon dioxide and water vapor. BE(C?H) = 456 kJ/mol)
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