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Calculate the pH of a buffer solution obtained by mixing 400.0 mL of 0.200 M acetic acid solution and 100.0 mL of a 0.300 M sodium hydroxide solution.(The pKa of Acitic Acid, CH3OOH is 4.74)
A solution is prepared by condensing 4.00L of a gas, measured at 27°C and 746mmHg pressure into 58.0g of benzene. Calculate the freezing point of this solution.
Calculate the concentration of solution containing one mole of phophate per litre
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
what are the H3O+ and OH- concentrarions in a 125 mL solution prepared with 0.100 mol pf NaOH and water?
Determine compound having greater Ksp or compound having smaller Ksp ? compute [Ag + ] when CuI just start to precipitate. What % of Ag + remains in solution at this point?
An aqueous solution is made by dissolving 25.8 grams of magnesium nitrate in 395 grams of water. What is the molality of magnesium nitrate.
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
a sample of nitrogen gas occupies 1.55 l at 27.0c and 1.00atm. what will be the volume be at -100.0 C and the same pressure
Under certain conditions, the substance ammonium nitrite can be broken down to form nitrogen and water. If 32.4 grams of ammonium nitrite react to form 14.2 grams of nitrogen
How many calories are required to warm 15.0 g of water from 75 C to 100.0 C and convert it to steam at 100.0 C? The heat of vaporization of water is 540 cal/g.
Determine the new volume of a 1.3 L balloon if it is taken from room temperature that is twenty five degree celsius and placed into a freezer at the temperature of -11.5 degree celsius.?
How much 0.230M KOH is required to completely neutralize 55.0mL of 0.220M HClO4
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