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A particular electrons position can be measured to a precision of 0.058nm, what is the minimum uncertainty in the electron' velocity? Me = 9.109 x 10E-31 kg, c= 3.00 x 10E8 m/s , h = 6.63 x 10E-34 js
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.00 nm in diameter? Take the m..
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
The baloon rises to an altitude of 20,000 m, where atmospheric pressure is 67 mmHg and the temp is 210 K. What is the volume of the balloon at 20,000 m
What are the conductance cell and the cell constant. Describe experimental method for the determination of the cell constant.
A solution of a specific vitamin has ?max = 273 nm and a concentration of 6.51 × 10-7 M. The absorbance of the solution at 273 nm is A = 0.180. What is the molar absorptivity of the vitamin at 273 nm? (sample pathlength = 1.00 cm)
What is the frequency of the photon emitted when a molecule of NaH drops from the second vibrational level to the first vibrational level
Calculate the freezing point and the boiling point of each of the following aqueous solutions. (Assume complete dissociation.) (a) 0.032 m MgCl2
crystallizes in a body-centered cubic array of atoms in which the length of the unit cell's edge is 569.7 pm (10-12 m). Calculate the density of the metal in g/cm3.
what mass of sucrose should be combined with 501 g of water to make a solution with an osmotic pressure of 8.85 atm at 305 K? (assume density of solution is equal to the density of the solvent).
The initial temperature of the water was 25.4 C and the final temperature of both the water and metal was 36.6 C. If the specific heat "c"
At 23.0 degrees celcius the total pressure in the container is 5.30 atm Calculate the partial pressure of each gas in the container Methane, ethane then propane answer in this order
Calculate DeltaG °rxn. c) In which direction is the reaction, as written, spontaneous at 25 °C and standard pressure?
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