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Problem- The surfaces of old silver coins were found to be covered with black sulfide, Ag2S (s). Electrolysis is required to remove the silver sulfide without damaging the coins. The half-reaction is ag2S + 2e -> 2AG + S2-. Calculate the number of moles of Ag2S consumed in 2.3 min by a constant current of 3.00 coulombs per second
Hello Experts please provide me the detailed computation for above question
Problem- The freezing point of a 0.01 m aqueous solution of a nonvolatile electrolyte is -0.072 deg. Celsius. What would you expect the boiling point of this same solution to be. (Kf = 1.86 degrees C, Kb = 0.512 C/m)
Which of the compounds I) zinc acetate (Zn(CH3CO2)2) II) barium sulfate (BaSO4) III) iron(III) hydroxide (Fe(OH)3) is/are soluble in water. Consider 'slightly soluble' to be insoluble.
A 1.30 g sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 715 mmHg.
calcium levels in blood can be determined by adding oxalate ion to precipitate calcium oxalate cac2o4 followed by
When 0.234 g of the hydrate Cr2(SO4)3•xH2O is heated, 0.128 grams of anhydrous Cr2(SO4)3 remains. What is the value of x in the formula for the hydrate
A sample of KHP weighed 1.126 g. Titration of this KHP required 20.19 ml of base (NaOH). What is the molarity of the base?
If each bottle contains 0.358 pint of mouthwash with a density of 0.880g/mL , how many kilograms of alcohol are in 200 bottles of the mouthwash.
Discuss what you would observe after elution and visualization of a TLC plate having made the following mistakes in carrying out the anaylsis.
The equilibrium constant for this reaction is Keq=4 at 110C. In a certain experiment, .6 moles each of water vapor and carbon monoxide are introduced into a 2 Liter vessel at 110C
How many grams of MnSO4 can be prepared from the reaction of 15.0 g of KMnO4 with 22.6 g of H2SO3.
A solution is made from ethanol, C2H5OH, and water is 1.60 m in ethanol. How many grams of C2H5OH are contained per 230. g of water?
Consider a galvanic cell consisting of a magnesium electrode in contact with 1.0 M Mg(NO3)2 and a cadmium electrode in contact with 1.0 M Cd(NO3)2. Calculate Eo for the cell and draw a diagram showing the cathode, anode
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