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If the uncertainty in velocity of an electron is 4200.0 m/s, what is the minimum uncertainty in its position?
Two carbon atoms are present in the simplest member of which of the following types of hydrocarbon derivatives
Determine the minimum excitation energy of an electron constrained to rotate in a circle of radius equal to the Bohr radius (the value of Bohr predicts for the electron-hydrogen distance in the n=1 state) around a fixed point.
normal c7h16 is dehydrocyclicizedc7h8g 4h2gbrvbarc7h16g to hydrogen and toluene in a continuous gas-phase reaction in
When white phosphorous (P4) is heated above 1100 K, the following equilibrium is observed in the gas phase P4 ? 2P2 b. The equilibrium constant has been measured as a function of temperature for this reaction
The heat capacity of a bomb calorimeter is 87.5kJ/K . If 67.2g of methane is combusted under such reaction conditions, what will be the increase in temperature of the calorimeter? Delta E combustion for CH4(g) is -885.4kj/mol.
In dilute solution the carbonyl absorption band of II occurs at 1702/cm. Explain this observation. stretching vibration in carboxylic acids is heavily mixed
Compute the amount of heat required to boil 92.1 grams of benzene (C6H6), start from a temperature of 42.5 degrees Celsius.
Calculate the pH of a solution prepared by diluting 2.5 mL of 1M acetic acid up to a final volume of 100 mL (pka 4.76)
Excess sodium sulfate is added to exactly 50 mL of a solution containing an unknown amount of silver(I) cation. Determine the concentration of the silver ion in this solution if 3.54 mg of a solid is isolated.
what is the animals initial radiation exposure in curies? b) if all of the energy from the emitted alpha particles is absorbed by the animals tissues, and if the energy of each emission
A 25.0-mL sample of 0.35 M HCOOH is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka = 1.77 × 10-4
what molar ratio of sodium acetate to acetic acid naachac should be used in preparing a buffer having a ph of 4.35? ka
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