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You have a 1.00 L buffer solution with 0.500 M NHC2O4 and 0.500 M Na2C2O4.--(1.) Determine the pH of this buffer. (2.) Some solid sodium hydroxide is added to this buffer system and the new pH is measured as 4.74. How many grams of NaOH were added? (Assume the total volume remains unchanged)
how many milliliter of 0.165M KMnO4 are needed to react with 108.0ml of 0.165 M oxalic acid? How many milliliter of 0.165M oxalic acid are required to react with 108ml of 0.165M KMnO4
At 50 C, the solubility of silver chloride, AgCl is 5.2 x 10^-4 g/100mL. Calculate the Ksp at this temperature.
A gas has a volume of 590 mL at a temperature of -55.0C. What volume will the gas occupy at 30.0C.
Large quantity of ammonia are burned in the presence of platinum catalyst to give nitric oxide as d first step in the preparation of nitric acid.
Determine what mass of sulphuric acid would be needed to mix with 0.75 mol of sodium hydroxide(NaOH)?
How many Joules of energy are stored in 1 pound (454 g) of sucrose? (Assume: Pressure = 1 atm, Temperature = 25°C; the respective ?Hf° for the reactants and products can be found in the thermodynamic table linked above. Show your calculation
The mass spectrum of an organic compound shows the relative abundances of M to be 44.42% and M 1 to be 10.57%. Assuming the peaks are caused by 12C and 13C isotopes
redraw it as a zwiterrion a neutral molecule with a positive and a negative electrical charge (n.b. not dipoles) at different locations within that molecule.
a) H2 (g) + Br2 (g) â?" 2 HBr (g) + heat [0.513] [0.62] [0.346] b) N2O4 (g) + heat â?" 2 NO2 (g) [0.0325] [0.022] c) NH4SH (g) â?" NH3 (g) + H2S (g) + heat [0.027] [0.0234] [0.209] Calculate Ke for the following (equilibrium concentrations give..
What mass of KCl is needed to precipitate the silver ions from 16.0 mL of 0.130 M AgNO3 solution?
What is the molar enthalpy of solid sodium hydroxide reacts with an aqueous solution of hydrochloric acid, forming water amd an aqueous solution of sodium chloride?
Calculate the molarity and the molality of an NH3 solution made up of 37.5 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
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