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Assuming that the resolution of an electron microscope is equal to the de Broglie wavelength of the electrons used, to what speed must the electrons be accelerated to obtain a resolution of 0.30 {nm}?
How many grams of O2 will be required to completely react with 2.43 grams of Mg metal ribbon to produce MgO.
an aqueous soultion of uknown salt of ruthenium is electrolyzed by a current of 2.50 amps passing for 50 min. if 2.618 g Ru is produced at the cathode, what is the charge on the ruthenium ions in solution?
Suppose solute A has a distribution coefficient of 1.0 between water and diethyl ether. Demonstrate that if 100 ml of a solution of 5 g of A in water were extracted with two 25 ml portions of ether a smaller amount of A would remain in the water t..
A .500M solution of a weak acid, HX, is only partially ionized. The [H+] was found to be 3.69x10^-3M. Find the dissociation constant for this acid.
The combustion of the alternative fuel, hydrogen gas, released 286 kj per mole of hydrogen gas combusted. if 10.0 l of hydrogen gas at STP was burned to produce electricity, how long would it power a 100 watt light bulb. assume no energy is lost t..
If an automobile is able to travel 247 mi on 10.8 gal of gasoline, what is the gas mileage in km/L.
The following data were collected at the endpoint of a titration performed to find the molarity of an HCl solution. Volume of acid (HCl) used = 14.4 mL
In a two-phase region the value of Xb determines the relative proportions of the two phases in the system. What is the expression for molar proportion Xv
draw the Lewis structure with all bonds and lone pairs (b) indicate directions in all bond dipoles (c) indicate the molecular dipoles and (d) indicate the shape of each molecule.
Compute the number of moles of H2O will be formed from the reaction 75.1g benzene?
A 1st order reaction is 58.2% complete in 48.2 minutes. determine the half-life of this reaction.
How long does it take to deposit a coating of gold 1.00um thick on a disk-shaped medallion 4.00 cm in diameter and 2.00 mm thick at constant current of 89 A?
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