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A water desalination plant is set up near a salt marsh containing water that is 0.10 M NaCl. Compute the minimum pressure that must be applied at 20.C to purify the water by reserve osmosis. Assume NaCl is completely dissociated.
When the two substances reach thermal equilibrium, the final temperature is 24.2 degrees celcius. What is the mass of the copper block?
A 4.50 g sample of NaOH at 25°C dissolves in 75.0 mL of water also at 25.0°C. The final equilibrium temperature of the mixture is 40.5°C. What is the enthalpy of solution, ?Hs, of NaOH expressed in kilojoules per mole
Use the integrated rate law method to determine the rate constant for the data collected for the reaction:
How many grams of argon would it take to fill a light bulb with a volume of 0.475L at STP
the solvent system used fortlc in this lab is a 311 mixture of n-butanolacetic acidwater.the pka of acetic acid is
Using the Solubility Product Constants for Compounds at 25°C from Appendix II of our book, Determine which of the following compounds would be the LEAST soluble. a) Aluminum phosphate b) Calcium hydroxide c) Copper (I) cyanide d) Lead (II) chlorid..
what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time. Assume ideal behavior for all gases
The total concentration of butyric acid (TOTBt) in a water sample is 1,000 mg/L as HBt and the pH = 5.5. What is the concentration of HBt in this water in mg/L? The following may be useful in solving this problem: HBt ? H+ + Bt- pKa = 4.82
2Al(s) + 2KOH(aq) + 4H2SO4(aq) + 22H2O(l) = 2AlK(SO4)2.12H2O(s) + 3H2(g) How many moles of H gas will evolved when 6 moles of Al react with excess KOH, H2SO4 and water?
What is the minimum pressure in kPa that must be applied at 25 degree C to obtain pure water by reverse osmosis from water that is 0.155 M in sodium chloride and 0.068M in magnesium sulfate
consider reduction of the following cobalt complexes conh35l3 l pyridine i nc5h4-p-ch2nh2 ii nc5h4-p-conh2 iii by
Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules. (Draw complete Lewis structures.
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