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a) The elemental calcium (Ca) is produced by the electrolysis of molten CaCl2. Explain how many pounds of calcium can be obtained if current is applied for 48 h 6.5x103 A? Presume a cell efficiency of 70%.
b) Explain two electrolytic cells connected in series. Knowing that one of them is deposited 0.50 g of silver (Ag) from a solution of AgNO3, compute the mass of chromium (Cr) is deposited on the cathode of another cell from a solution of Cr (NO3) 3.
A solution is prepared by mixing 50.0 mL of 0.29 M Pb(NO3)2 with 50.0 mL of 1.9 M KCl. Calculate the concentrations of Pb2+ and Cl at equilibrium. Ksp for PbCl2(s) is 1.6 x10-5.
Write the balanced net ionic equation for the reaction that occur in the following case. Ba(NO3)2 (aq) + K2SO4(q) Express your answer as a balanced net ionic equation.
Consider the following equation: 2Mg(s) + O2 (g) → 2MgO(s). How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg?
The density of water at room temperature is less than the assumed 1.0 g/mL used in the calculations for determining the enthalpy of neutralization. How will this small (but real) assumption affect the reported enthalpy of neutralization for the st..
Under what reactiong mechanism the ring break in methylcyclohexene to form an open ring with two OH on it. its organic two btw
it decomposes into CO gas and Cl2 gas. If 12.5g of COCl2 is initially placed in a 2.20L container at 575K, calculate the concentration of CO at equilibrium. Kc= 2.50 * 10^-3 at 575K.
Calculate the pH of a solution made by mixing 2.0 M HF and 2.0 M HCN. Also calculate the concentration of CN- ion at equilibrium.
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
an electrochemical cell passes 2 moles of electrons for itsbalanced equation as written. at 290.97 k the cell voltageis
What covalent bond in methyl salicylate and water were broken during reaction of converting methyl salicylate to salicylic acid?
A water desalination plant is set up near a salt marsh containing water that is 0.10 M NaCl. Calculate the minimum pressure that must be applied at 17°C to purify the water by reverse osmosis.
A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O is placed in a 1.0- L vessel at 300 K . The following equilibrium is established:
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