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A current of 0.010 amp is passed through an aqueous solution of rhodium sulfate salt. The only reaction at the cathode is the deposition of rhodium metal. After 3.0 hours, 0.038g of rhodium metal has been deposited. What is the formula of the rhodium sulfate salt?
Three 10.00mL samples of juice were titrated with DCP that had a standardized concentration of 1.01x10-3M. The three titrations took an average of 13.82mL of DCP. Calculate the mass (in mg) in 50.00mL of juice. (MM Ascorbic Acid = 176.124 g/mol)
When one mole of hydrogen iodide(HI) is stored in a 1-liter container at 444 oC, 22 % of HI wil be dissociated at equilibirum. Calculate the equilibrium constant of the reversible reaction of hydrogen iodide (HI)at 444 oC.
A 125.0ml contains a gas at 27 degrees Celsius and 760mmHg of pressure. the gas is pumped into an empty 1.50L flask also at a temperature of 27 degrees Celsius. What is the pressure ( in atm) of the gas in the new flask.
What is the most important attractive forces (London dispersion, dipole dipole, hydrogen bonding) and the number of bonding domains
Calculate the values of Avogadro's number and the Faraday assuming the charge in an electron is 1.602 x 10^-19 coulombs/electron. Also calculate the mass the magnesium anode have lost during the process.
This standard reaction will only be spontaneous at high temperatures (T > 550 K) This standard reaction will only be spontaneous at low temperatures (T
If the initial surface coverage is 8.9*10^16 molecules/cm^2, how long will it take for one-half of the film to evaporate? b. What fraction of the film is left after 10 s? Assume the same initial coverage as in part a.
A student used a DCP solution (standardized to 9.94x10-4M) to analyze a sample of extract from 3.50g of solid food. The titration required 22.49mL of DCP. 91.75% of all the ascorbic acid in the food was collected in the extract. (MM Ascorbic Acid ..
Suppose that the microwave radiation has a wavelength of 11.2cm . How many photons are required to heat 295mL of coffee from 25.0C to 62.0C
explain why granulated activated charcoal is considered to be the best available treatment technology for dioxins in water.
Calculate the percent ionization of nitrous acid in a solution that is 0.230 M in nitrous acid (HNO2) and 0.270 M in potassium nitrite (KNO2).
What is the freezing point in of a solution prepared by dissolving 4.80 of in 110 of water. The value of for water is 1.86 , and the van't Hoff factor for is = 2.7.
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