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1. Determine the hydronium-ion concentration for a solution that has a pH of 0.17.
2. A solution of perchloric acid has a concentration of 3.00 x 10^-4 mol/L. Determine the pH of this solution.
3. A solution has a pOH of 4.5. Determine the hydroxide-ion concentration.
4. The concentration of hydroxide ions in a solution of strontium hydroxide is 8 x 10^-2 mol/L. Determine the pOH of this solution.
5. Flask X contains 1 dm3 of helium at 2kPa pressure and flask Y contains 2 dm3 of neon at 1kPa pressure.? If the flasks are connected at constant temperature, what is the final pressure?
A mixture of 100 g of K2Cr2O7 and 200 g of water is stirred at 60 C until no more of the salt dissolves. The resulting solution is poured off, leaving the undissolved solid behind.
Compute the mass in g of precipitate formed when excess sodium hydroxide is added to 42.5mL of 15.5% magnesium nitrate solution whose density is 1.12 g/mL.
a gaseous mixture of and contains 36.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if the
Will the equilibrium concentration of the product FeNCS2+ in the test solution be too high or too low please explain
Determine de yield or recovery percent in the synthesis of an adduct made with 0.10 mL of furan and 0.20g of maleic anhydride.
What is the percent ionization of ammonia at this concentration. Express the percentage numerically to three significant figures
A heliox deep-sea diving mixture contains 6.0% oxygen and 94.0% helium.What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.0
Question- A chemist needs a buffer with a pH 3.50. How many mL of pure formic acid (density=1.220 g/mL) must be added to 325 mL of .0857 M NaOH solution to obtain such a buffer
The acid ionization constant of Fe(H2O)62+(aq) is 3E-6. Compute the pH of a 0.2 M aqueous solution of Fe(NO3)2. 5. Compute the solubility of Mg(OH)2 in a buffer solution at pH=10.31. The solubility product of magnesium hydroxide is 1.2E-11
A large amount of aqueous ammonia is added to a Cd^2+ solution and the complex ion Cd(NH3)4^2+ forms. Write the equation for this reaction.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP = 30.8 ..
The dried precipitate weighs 10.3g. Calculate the amunt of MgCl2 in the original sample (in weight percent).
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