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You have a solution that contains both calcium and magnesium nitrate. The concentration of each is 0.1250 M. What is the pH of the solution when the least soluble one is precipitated before the most soluble one starts precipitating? The solubility product constant for the metal hydroxide are K = 4.68 × 10^-6 and the K = 2.06 × 10^-13
The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample
Magnesium ions can be precipitated from seawater by the addition of sodium hydroxide. How much sodium hydroxide in grams must be added to a sample of seawater to completely precipitate the 82.4 of magnesium present
A sample of a gaseous compound of nitrogen and oxygen weighs 5.25 g and occupies a volume of 1.00 L at a pressure of 1.26 atm and temperature of -4.0 °C. Which of the following molecular formulas could be that of the compound
If Ka for an acid, HA, is 0.00177, what is the pH at one half the equivalence point for a titration of 50.00 mL of 0.100 M HA with 0.100 M NaOH
Dry air contains 20.94% oxygen by lolume. the solubility of oxygen in water at 25 degrees celsius is 0.041 grams per liter of water. how many liters of water would dissolve the oxygen in one liter of dry air ar 25 degrees celcius and 1.00 atm
Silver iodide is very insoluble in water. A common method for increasing the solubility is to increase the temperature of the solution containing the solid. Estimate the solubility of AgI at 85 C
calculate the number of moles of carbon dioxide formed if 23.1 ml of sodium carbonate reacts with excess hydrochloric acid.
if you want to have a water-salt solution that freezes at -10degc what mass of nacl must you add to 3.0 kg of water?
circle the correct choices to indicate how many electrons each element must gain or lose to form an octet
How much 0.20mol/L sodium hydroxide should be combined to this buffer to raise the pH to 5.1? If the same amount of 0.20 mol/L sodium hydroxide were combined to 250mL of deionized H 2 O, Determine New pH?
Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon monoxide gas at STP.
Calculate the empirical formula for the following compound: potassium tartrate found in baking powder: 20.8% K, 2.7% H, 25.5% C, and 51.0% O
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