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The resolution limit of a microscope is approximately equal to the wavelength of light used in producing the image. Electron microscopes utilize an electron beam in place of photons to produce much higher resolution images, about 0.22 nm in modern instruments.
Presuming that the resolution of an electron microscope is equal to the de Broglie wavelength of the electrons utilized, to what speed should the electrons be accelerated to obtain a resolution of 0.22?
you have 2.50 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. determine the concentration of the sugar solution after the water has been added.
The atmosphere slowly oxidizes hydrocarbons in a number of steps that eventually convert the hydrocarbon into carbon dioxide and water. The overall reactions of a number of such steps for methane gas is as follows
Compare your predicted molecular polarity, and the dipole moment predicted by Alchemy, to the actual measured values in the given table. Which modeling system gave better results
Magnesium metal reacts with HCl solution, liberating H2 gas and generating Mg2+ cations in solution. A 1.505-g sample of Mg metal is added to 150.0 mL of a 4.00 M HCl solution, and the reaction goes to completion. What mass of H2 is formed
A 10.0 mL aliquot of this weak acid solution was titrated with a 0.0498 M NaOH solution. The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid
Ammonia reacts with nitrogen monoxide to produce nitrogen gas and water vapor. If .240 moles of ammonia react, how many moles of nitrogen monoxide will be consumed?
Geometric isomers illustration, This is more of a theoretical question I think. Co(NH3)5ClBr has two compounds for that one formula.
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
Whats the reduced mass of CO2. I know how to do it for CO but since its 3 molecules do you go m1+m2+m3/m1m2m3 or is m2 just 32
What volume of 0.382 M NaOH is needed to reach the equivalence point in the titration of 24.9 mL of 0.0390 M chlorous acid, and what is the name of the salt that is formed during the titration
a student makes 215 ml of a 3.15m solution of na2so4. he then forgets to seal it and some water evaporates overnight.
Explain why you are sometimes unable to make a direct comparison of maximum deviation with the imprecision of the measurements
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