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Explain how many seconds are required to produce 1.0 g of silver metal by the electrolysis of an AgNO3 solution using a current of 30 amps?
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
When a solution of magnesium chloride is electrolyzed, redlitmus turns blue and a gas is evolved in the cathode chamber. Whatis the cathode reaction
a calorimeter containing 200.0 ml of water was calibrated by carrying out a reaction which released 15.6 kj of heat. if
pure benezene has melting point of 5.5 degree celsius. change in heat for benzene is 9.87 kjmol. calculate the number
State a beaker contains 100. mL of 0.0640 M H2SO4. Define what volume of 0.0470 M KOH solution is needed to exactly neutralize the acid
Which of the following will precipitate as chloride salts: Ag+, Pb2+, Ca2+, K+, and Cu2+?
Determine if a precipitate forms when the following solutions are mixed. Write the overall equation, the total ionic equation, and the net ionic equation. PbNO3(aq) + 2KI (aq)
What is the mass percent of NaCl in a solution obtained by mixing 50g of this solution with 215g of H2O?
which of the following reduces the solubility of calcium fluoride?a presence of uncommon ions such as na and cl-b
A sample of a compound of xenon and fluorine contains molecules of a single type; XeFn, where n is a whole number. If 5.0 x 1020 of these XeFn molecules have a mass of 0.172 g, what is the value of n
Dissolution of 0.0050 mol of Cr( OH )_3} in 1.0 L of 1.0 M NaOH gives a solution of the complex ion Cr( OH )_4^-}; Kf} = 8 10^{29}). What fraction of the chromium in such a solution is present as uncomplexed Cr^{3+}}
At equimolar concentrations of Fe+2 and Fe+3, what must [Ag+] be so that the voltage of the galvanic cell made from the Ag+/Ag and Fe+3/Fe+2 electrodes equals zero? The reaction is Fe^+2 + Ag^+ = Fe^+3 + Ag
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