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Compare cross-sections of the direct ionization by electron impact computed using different modifications of the Thomson formula. Compute maximum values of the cross-sections as well as corresponding values of electron energy for each of the Thomson formula modifications.
calorimetry can be used to find heats of combustion. suppose a calorimeter helps someone to determine that 4032 kj of heat is released during the combustion of 88.0 grams of propane, C3H8 (44.0 g/mol).
If 0.487 grams of AgNO3 is dissolved in 20 ml of water, how many moles of silver ions will be present in each millimeter?
Determine the root-mean-square speed of CO2 molecules that have an average kinetic energy of 4.2 x 10^-21 J per molecule.
A piston has an external pressure of 13.0 atm. How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.490 liters.
Formulate a suitable mechanism to account for the reaction of thionly chloride with carboxylic acids to yield the corresponding chlorosulfite.
Gold has a face-centered cubic arrangement with a unit cell edge length of 4.08 . How many moles of gold fit in a sheet with a length of 72.3 , a width of 26.9 , and a thickness of 12.2
When 50. mL of 0.50 M formic acid is titrated with 0.50 M sodium hydroxide, calculate the pH when half of the formic acid has been neutralized, and at the equivalence point (be sure to account for the change in volume at each step). Select a good ..
The radioactive decay of Tl-206 to Pb-206 has a half-life of 4.20 min. Starting with 3.70 1022 atoms of Tl-206, calculate the number of such atoms left after 38.0 min.
What are the probable classes of hydrocarbon or hydrocarbon derivative (i.e.: alkane, alkene. ketone. ester. organic halide, etc...) in each of the following
A reaction has the stoichiometry A + B + C? P. Explain the concentration of P one minute after mixing the reactants is precise for various initial concentrations of reactants.
If a non-cyclic alkane shows a molecular ion peak at m/z 2.40 × 102, what is the chemical formula
The initial solution. the point at which 80 mL of the base has been added
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