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What is the wavelength, in nanometers, of the light emitted when the electron in a hydrogen atom drops from the energy level n_i = 12 to n_f = 5
The rate constant for the second order reaction 2NO2 ???&??; N2O4 is 2.79 L/mol •min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life
Is density of an organic molecule directly related to the molecular weight of a substance. (That is, does density always increase when molecular weight increases) Use the examples above to explain.
The activation energy of a certain reaction is 52.9 kJ/mol. How many times faster will the reaction occur at 35 degrees C than at 25 degrees C
Why is the Hydrogen atom of the -OH group on a carboxylic acid the most acidic hydrogen (the only H that can be removed by a base) in this type of molecule>
How much thermal energy is required to take a 42.0 g block of ice at -12 degrees C and heat it to steam at 131 degress C
substance A has a smaller heat of vaporization than substance B. Which will undergo a larger change in vapor pressure for a given temperature
write the condensed electron configurations for the rm ga atom.express your answer in condensed form in order of
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
Experimentally observed facts have led to the establishment of rules used to predict the solubility of common compounds in water. The rules can be stated as follows: Compounds that contain , , , and are always soluble with no particular exceptions..
The goes like... "A balloon containing 35.5grams of Cl2 and 38.0 grams of F2" (then somewhere along in teh question it says "the volume is increased to 10L"
The solubility product constant for Cu(IO3)2 is 1.44 x 10-7. What volume of 0.0520 M S2O32- would be required to titrate a 20.00 mL sample of a saturated solution of Cu(IO3)2?
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
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