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1. What is the pH of a buffer made by mixing 250 mL of 0.3 M KOCN with 150 mL of 0.25 M HOCN. Ka for HOCN is 3.5 x 10^4
2. Calculate the solubility in g/L for CaF2 in water at 25 C. Ksp is 3.4 x 10^-11
3. The solubility of magnesium carbonate, MgCO3 in water at 25 C is 0.27 g/L
a. Calculate Ksp for magnesium carbonate
b. Calculate the molar solubility of MgCO3 in 0.15 M MgCl2
4. Calculate the molar solubility of AgBr in 4.0 M NH3. Kf for Ag(NH3)2 is 1.7 x 10^7 and Ksp for AgBr is 5.0x10^-13
5. What is the pH at the equivilaence point when 45 mL of 0.125 M acetic aced is titrated with 0.225 M NaOH? Ka for acetic acid is 1.7x 10^-5
How many moles of Na2SO3 were added to the calorimeter cup if 30.0mL 0.50 M NaOCl and 70.0mL 0.50 M Na2SO3 were combined?
Calculate the final temperature when a 20.4 gram sample of ice at 0oC is placed into a styrofoam cup containing 111 grams of water at 72.7 oC. Assume that there is no loss or gain of heat from the surroundings.
2.00 x10^2 mL of .744 M HCl is mixed with 2.00 x 10^2 mL of .372 M Ba(OH)2. how many moles of water are produced in the reaction
Calculate the molarity of the hydroxide ions in a solution that has been prepared by dissolving 88.7 g of barium hydroxide
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
The minerals chalcocite (Cu2S) and malachite (Cu2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals?
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq)
A solution of ammonia and water contains 1.40×10^25 water molecules and 5.30×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
Define Supercritical fliud. Give an example and it's properties. Which fundemental thermodynamic property is important to the solubility
What would be the percent by mass of NaI solution prepared by dissolving 95 g NaI in 450 g water?
what is the partial pressure of NOCl which reacted in order for the partial pressure of NO to be .084 atm? what is the partial pressure of Cl_2 at equilibrium what is the magnitude of K_p for the equation above?
How much heat is evolved when 239 g of ammonia gas condenses to a liquid at its boiling point?
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