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If a molecule having an ionization energy of 11.49 eV produces a photoelectron having a kinetic energy of 6.408E-19 J, what is the wavelength of the incident radiation?
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=∞.
A buffer is made by mixing HCN and KCN to give a solution whose pH is 9.49. If the KCN molarity is 0.20 M, what is the molarity of the HCN?
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
Consider a mixture is a 2 dm^3 flask at 27 degree C. For each of the following mixtures, calculate the partial pressure of each gas, the total pressure, and the compositon of the mixture in mole percent. (Hint: for mole percent take your answer fo..
Octane has a vapor pressure of 40. torr at 45.1 degrees celcius and 400. torr at 104.0 degrees celcius. What is its heat of vaporization (R=8.214 J/K mol)
If the density of an unknown gas is .0985 g/l at 25 degrees Celsius and 725 torr, calculate the density of the unknown gas at 48 degrees celcius and 740 torr
Solute S has a partition coefficient of 6.1 between water (phase 1) and hexane (phase 2). A 74.0 mL solution of S in water is extracted six times with 12.0 mL of hexane. Calculate the fraction of S remaining in the aqueous phase.
what is an element with seven electrons in the outer orbit called: metal, halogen, metalloid, noble gas, none of the above
calculate the change in H, change in G and K (at 298) for the production of ozone from oxygen: 3O2(g) goes to 2O2(g) at 30 km above the surface of the earth the temperature is about 230 K and the partial pressure of oxygen is about 1.0 x 10^-3 atm
In an experiment, equal volumes of 0.00200M FeCl3 and 0.00200M NaSCN were mixed together and reacted according to the equation:
An energy maximum in a reaction-energy diagram would be labeled as which of the following?
bromobutane can be converted to butan- ol using aqueous potassuim hydroxide solution. outline one possible method. that
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