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saccharin (ka =2*10^-12) is a weak acid represented by formula HSaC.A 4*10^-4 mole amount of saccharin is dissolved in 200 cm3 water of PH 3. Assuming no change in volume. Calculate the concentration of SaC- ions in the resulting solution at equibrium.
Stearic acid has a freezing point of 71.20 C and a Kf of 4.890C/m. A 400.0 g quantity of stearic acid to which 50.0 g of an unknown is added has a freezing point of 68.00C. Calculate the molar mass of the unknown.
What is the mechanism for the side products that are formed when 4-methylcyclohexene is formed form the dehydration for 4-methylcylcohexanol
Compute the temperature of the product mixture if the methane as well as air is both at an initial temperature of 0.0 degrees Celsius. Presume a stoichiometric ratio of methane to oxygen from the air,
Draw an oxygen saturation curve for a cooperative protein that shows a p50 of 45 torr. On the same graph draw a c curve that shows a protein that is non-cooperative with p50 of 15 torr
How many grams of magnesium must react to displace 12.5 g of silver from a solution of silver nitrate?
1.00 mL of .500 M Ag+ is added to this solution and the resultant AgCl quantitatively precipitated. Basd on the Ksp expression, calculate the concentration of the Cl- that remains in solution
how much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?119g
A bottle contains 225mL of insulin at a concentration of 40.0mg/mL . What is the total mass of insulin in the bottle?
Elemental sulfur reacts with oxygen and water to produce Sulfuric acid in the presence of a catalyst. What minimum mass of sulfur is needed to prepare 175g of sulfuric acid
While preparing oxalate buffer technician by mistake added 0.1 M of CaC2O4 (pKsp=7.9) to 0.2 M solution of oxalic acid (pKa's 1.25; 4.26). What is the pH of this solution? Is it a buffer
Calculate the boiling point of this water-ethylene glycol mixture. (The density of ethylene glycol is 1.11 g/mL.)
A 27.5 mL volume of a 0.107 NaOH solution is added to 20.0 mL of a 0.211 M HCL solution. What is the pH of the solution
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