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a) In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 65.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops?
b) Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate how many liters of seawater are needed to produce 25.9 L of fresh water at 20 °C with an applied pressure of 65.0 bar.
calculate the pH change that takes place when a 100mL of (a) 0.0500M NaOH and (b) 0.0500M HCl is added to 400mL of a buffer solution prepared by mixing 0.200M NH3
What is the pH of the solution at the equivalence point for the titration of 100 mL of a .786 M HCO2H solution with a .786 M Solution of sodium Hydroxide? Formic acid has a Ka=1.80*10^-4
What is the major disadvantage of using concentrated sulfuric acid (or hydrochloric acid) rather than 85% phosphoric acid for the dehydration of alcohols?
If a heated metal block is placed into a beaker of water, what is the relationship between the final temperatures of the water and the metal block?
Calculate the work for a process which one mole of NH3 gas is expanded from 1.0L to 20.0L in an isothermal reversible process at 300K.
The inner and outer surfaces a spherical shell with radii of 1cm and 2cm are 300C and 100C respectively .If the thermal conductivity of the shell is 2w/m.k,determine the heat transfear through the shell.
What is the theoretical yield in grams? What is the theoretical yield in moles? (I already have the calculated amounts of reactants) Just need theoretical yields.
a mixture of three gases has a total of 756 mm Hg. If the pressure of nitrogen is 612 mm Hg and the pressure oxygen if 100 mm Hg, what is the pressure of the carbon dioxide gas in the mixture?
calcium malonate, the salt of malonic acid, is found in beetroot and is known as an inhibtor of the citric acid cyle. if a sample of beetroot disolved in water has a pH of 8.20,
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating.
Give the formula unite that forms from ionic compounds between: 1 Potassium and Nitrogen 2 Aluminum and Phosphorus 3 Aluminum and Phosphorus
How many grams of cholesterol are in 230 mL of blood? The concentration of cholesterol (C_27H_46O) in blood is approximately 5.0mM.
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