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Seawater containing 3.50 wt% salt passes through a series of 10 evaporators. Roughly equal quantities of water are vaporized in each of the 10 units and hen condensed and combined to obtain a product stream of fresh water. The brine leaving each evaporator but the tenth is fed to the next evaporator. The brine leaving the tenth evaporator contains 5.00 wt% salt. Determine the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed) and the fraction of salt in the solution leaving the fourth evaporator.
When 0.01 M Fe2+ solution and 0.10 M Fe2+ solution are separated by porous disk in the same beaker, calculate the cell potential at 298K.
Balance the following equation, using the smallest possible integer coefficients. Then enter the 4 coefficients in the 4 answer boxes. (Suppose the coefficients were 6, 5, 4 and 3 for the 4 substances, from left to right in the equation.
For each of the following reactions at equilibrium indicate if the equilibrium mixture contains mostly products mostly reactants or both products and reactants: a)2H2O(g) 2H2(g)+O2(g) Kc=4x10^-48. b)N2(g)+3H2(g) 2NH3(g) Kc=0.30. c)2SO2(g)+O2(g) 2S..
How much water must be added to 562 mL of 0.200 M HCl to produce a 0.148 M solution? (Assume that the volumes are additive.)
The specific heat capacity of nickel from these experimental data is calculated to be 0.429J/goC Calculate the molar heat capacity of Ni in J / mol oC, to 3 significant figures
What are the rules for when the molecule goes through the chloronium ion or not. For example a cyclopentane with a double bond. One of the double bonded carbons is bonded to a methyl group.
Write the balanced equation for neutralization of sulfuric acid and sodium hydroxide. How many mL of a 0.2 M solution of sodium hydroxide would be required to neutralize
A coffee-cup calorimeter contains 140.0 g of water at 25.2 *C. A 122.0 g block of copper metal is heated to 100.4 *C by putting it in a beaker of boiling water.
The Henry's Law constant for N2 gas in water at 25 oC is 0.00068 mol/L-atm. Calculate the solubility of N2 in water at 25 oC in moles/L if the partial pressure of N2 in the headspace above a water sample is 1.83 atm.
Determine the atomic weight of your metal: Calculate the percent error for each using the atomic weight (literature) off of the periodic table:
A student breaks a thermometer and spills mercury onto the floor of a lab that measures 6.1 m x 5.3 m x 3.1 m. What is the mass of mercury in grams that is vaporized at equilibrium AND what is the concentration of mercury in mg/m3
Determine what would be the total ?nal pressure of the system in atmospheres If we completely hydrolyzed 0.18 kg of H2O in a 8.2 L container at 300 K?
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