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Calculate the pH of a solution that is 0.295 M in sodium formate (NaHCO2) and 0.205 M in formic acid (HCO2H). the Ka of formic acid is 1.77x10^-4.
A total charge of 96.5 kC is passed through an elctrolytic cell. What mass of silver metal will be produced from a silver nitrate solution?
What is the coordination geometry about the vanadium ion incrystals of the alum? Write balanced equations for each reduction step. Assuming an average current of 1.75amps is passed during theelectrolysis, calculate how long it would take to reduce ..
A room contains 12,000 ft.³ of air at 75°F and 29.7 inches Hg Absolute. The air has a dew point of 60°F. How many pounds of water vapor are in the air
How much heat is associated with converting 100g steam at 112 degrees c to ice at -5.3 degrees c
Would the mass of the precipate collected be more, unchanged, or less if the residue was washed with hot distilled, deionized water instead
the temperature of a lead fishing weight rises from 15 oc to 45 oc as it absorbs 22.5 kj of heat. what is the mass of
A buffer solution contains 0.71 mol of boric acid (H3BO3) and 0.53 mol of sodium dihydrogen borate (NaH2BO3) in 4.00 L. The Ka of boric acid (H3BO3) is Ka = 5.8e-10. What is the pH of the buffer after the addition of 0.50 mol of NaOH
If the width of a spectral line of a certain electronic transition is 1.00 cm-1, what is the minimum uncertainty in the lifetime of the transition?
What is the mole fraction of solute and the MOLAL (MOLALITY NOT MOLARITY!!!!!) concentration for an aqueous solution that is 14.0% NaOH by mass
Electrons can be used to probe the arrangement of atoms on a solid surface if the wavelength of the electrons is comparable with the spacing between the atoms
Classify each of the reactions in problem 4 as an oxidation-reduction, substitution, addition, or esterfication reaction. Write an equation for the synthesis of
find the density of a rock is found to have a mass of 33.8 g. when placed in a graduated cylinder containing 40.0 ml of
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