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The electron microscope has been widely used to obtain highly magnified images of biological and other types of materials. When an electron is accelerated through a particular potential field, it attains a speed of 9.38 x 106 m/s. What is the characteristic wavelength of this electron?
A solid sample containing some Fe^2+ ion weighs 1.062 g. It requires 24.12 mL 0.01562 m KNno4 to titrate Fe^2+ in the dissolved sample to a pink end point. How many moles MnO4- ion are required
This strontium isoptope is radioactive, with a half-life of 28.1 years. Calculate how long (in years) it will take for 5.63g of the isotope to be reduced to .354g by decay
.28 moles of Br2 and .32 moles of CL2 are introduced into a 5.0 L container at 298 K calculate the equilibrium concentration of BrCl2
If 3.30ml of vinegar needs 45.0ml of 0.130M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
Equal volumes of 0.190 M weak base (Kb = 2.5× 10-9) and 0.190 M HCl are mixed. Calculate the pH of the resulting solution.
A 3.00 g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. What is the solubility (in g salt/100 g of H2O) of the salt?
Under what conditions of pressure and temperature do real gases most closely approximate ideal-gas behavior?
what mass of Na2SO4 is needed to prepare 350. ml of a solution having a sodium ion concentration of 0.125 M.
what two steps in the reaction are accelerated by the presence of strong acid, and what function does the acid play in each of these steps
What is an alternative way to draw this molecule? (include the resulting formal charge on the Nitrogen, please)
Suppose that a fully charged lead-acid battery contains 1.50 L of 5.00 M H2SO4. What will be the concentration of H2SO4 in the battery after 3.30 A of current is drawn from the battery for 8.00 hours?
Solid iron reacts with chlorine gas to produce iron(III) chloride. If 10.0 grams of iron reacts with excess chlorine gas and 18.5 grams of iron(III) chloride is produced,
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