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The He I (21.22 eV) photoelectron spectrum of a molecule shows a series of equally spaced sharp peaks corresponding to photoelectron kinetic energies of 12.156, 12.295, 12.434, 12.573, and 12.712 eV. What is the vibrational frequency of the molecular ion (in wavenumbers)?
A hazardous waste incinerator has been burning a certain mass of dichlorobenzene (C6H4Cl2) per hour, and the HCl produced was neutralized with soda ash (Na2CO3).
Calculate the 'size' of a hydrogen atom in its ground state according to this definition. Go on to explore how the 'size' varies as the definition is changed to other precentages, and plot your conclusion.
Why is the first step in an electrophilic aromatic bromination reaction so much more endothermic than the first step in an electrophilic addition to an alkene
which of the following processes are exothermic?
Why do we avoid leaving glass electrodes immersed in solutions of bases for more then a brief time
a) A 2.00 g sample of a gas SX6 has volume of 329.5 cm^3 at 1.00 atm and 20 C. WHat element is X. b) What is the density of carbon monoxide gas at 127 C and 763 mm Hg.
In what ways may the rotational and vibrational spectra of molecules change as a result of isotopic substitution
Determine the Kelvin temperature required for 0.0470mol of gas to fill a balloon to 1.20L under 0.988atm pressure.
If 72.4 kJ of heat is supplied to a 852 g block of metal, the temperature of the metal increases by 9.6°C. Calculate the specific heat capacity of the metal in J/g·°C.
Determine the time (in hours) required to recharge a Ni-Cd battery by converting 2.43 g Cd(OH)2 back to Cd using a charger that supplies 125 mA of current.
for which blocks of elements are outer electrons the same asvalence electrons? for which are d electrons oftenincluded
As a solid, Fe adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Fe. What is the volume of a unit cell of this metal
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