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Explain it has been suggested that gold might be recovered from seawater. If seawater contains about 4 x 10-9g/L of dissolved gold, explain how many liters of seawater would have to be processed to get 1.00 ounce of gold? (1 oz=28.4 g)
What can be said about the stoichiometric coefficients of a balanced chemical reaction AND the powers to which the concentrations are raised in the rate-law expression
Why is it preferable to use a metal ion buffer to achieve pM = 7, rather than just dissolving enough M to give a 10-7 M solution?
the thermal equilibrium temperature of the metal sample plus water mixture is 24.6 *C. what is the specific heat of the metal?
calculate the pressure exerted in the closed end of an apparatus if the atmospheric pressure is 720.0 torr and the height of the water column is 22.3 cm.
An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal. a=2R a=..
we can calculate kb for the carbonate ion if we know the ka values of carbonic acidh2co3.a is ka1 or ka2 of carbonic
What is the pH of a solution made by mixing 25.00mL of 0.200M CH3COOH with 10.00mL of 0.200M NaOH? Ka of acetic acid is 1.8 x 10^-5.
120.0 mL sample of a 0.81 M H2SO4 solution is diluted with enough water to reduce the concentration of the solution to 0.50 M. What is the volume of the diluted H2SO4 solution.
solid sodium metal reacts with water, giving a solution of sodium hydroxide and releasing hydrogen gas
In the titration of a weak base (0.100 M piperazine, 40 mL) with a strong acid (0.100 M HCl). Calculate the pH values between 0 mL Va and 100 mL in 10 mL steps. The two Ka values of piperazine are 4.65 x 10^-6 and 1.86 x 10^-10
the next three questions pertain to the complete combustion of ethyl acetate under constant pressurenbspch3cooc2h5l
a variable-volume container filled with oxygen has a volume of 1.60 l at 1.00 atm and 25 degc. what will the volume of
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