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Metallic tungsten is gain by displacement of tungsten from tungsten (VI) oxide by hydrogen at high temperatures. Explain what volume of H2 (measured at 0.975atm and 25oC) is necessary to react with 46.4g of WO3?
How many minutes will it take to electroplate 46.1 g of gold by running 5.00 A of current through a solution of Au+(aq)? Express your answer to three significant figures and include the appropriate units.
The rate constant for the second- order reaction.starting with a concentration of 0.86m, calculate the concentration of NOBr after 57s.
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
use standard reduction potentials shown below to calculate the potential of a nickel-cadmium cell that uses a basic
A solution contains 0.010 M each Cu(NO3)2 and Bi(NO3)3. An equal portion of 12 M NH3 is added to the solution. What is the initial concentration of OH- (in M) once the two solutions have been mixed together, but prior to any reactions occurring? Th..
One liter of an acetate buffer is prepared by adding 60mL of 1.5M acetic acid and 50mL of 0.4M sodum acetate. Calculate the final concentrations of acetic acid and acetate
ninickel can be extracted from nickel sulfide concentrates at 1200 c via the following reaction4nios ni3s2s -gt 7nis
An organic compound is quite polar and is thus much more soluble in methanol than in pentane (bp 36 degree C). Why would methanol
Calculate the equilibrium constant Ksp for Mg(OH)2 (s) at 25 degrees celcius. Is the dissolution of Mg(OH)2 endothermic or exothermic
Calculate the conditional formation constant Kf' for the formation of an EDTA complex with copper(II) at a pH of 5.00, if log Kf = 18.80. Show Work.
The reaction is spontaneous at all temperatures C) It is impossible to determine if the reaction is spontaneous without calculations D) The reaction will only be spontaneous at low temperatures E) The reaction will only be spontaneous at high temp..
Another beverage that uses FD&C Yellow #5 (M = 534.36 g/mol) for its distinctive color is Gatorade Lemon-Lime. The literature value of the molar absorptivity of FD&C Yellow #5 at 430 nm is E = 2.43 x 10^4 M^-1 cm^-1.
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