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The solubility of benzoic water in acid at 0 degrees C is .90gm/100ml. In a recrystallization of benzoic acid, 22.5gm benzoic acid is dissolved in 450ml boiling water. This solution is allowed to cool to room temperature and then placed in an ice bath. What is the theoretical maximum percent recovery?
What is the osmotic pressure at 22 C of an aqueous solution that contains 4.35 g of urea (NH2CONH2) dissolved in 100 ml of solution
A hemoglobin molecule can bind up to four oxygen molecul;es.in a certain experiment a 0.085L solution containing 6g of deoxyhemoglobin was reacted with an excess of oxygen in a constant pressure calorimeter of negligible heat capacity
write the equation for self-ionization of water and why ammonia is a weak base.
what percentage of HSO4- is dissociated in 2M solution? Why does molarity approximate molality at low concentrations?
Diethylamine, (C2H5)2NH, is a weak base (pKb=3.16 at 25oC). What is the pH of 0.155 mol/L (C2H5)2NH(aq) at 25oC? Give your answer accurate to two decimal places.
Using an aqueous solution of Ba(NO3)2 the density of this solution is measured to be 3.640g/ml and this solution containing barium nitrate mole fraction of 0.01704. compute the molarity of this solution?
How would the observed molarity of your experiment be affected by the following circumstances. (i.e. would it be higher than the true value, lwer than the ture vaule or remain unchaged?)
An electric current is passed through an aqueous solution of LiBr. Use the Standard Potentials Table at the end of this assignment. a. What is produced at the anode. b. What is produced at the cathode
The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is __________ V when [Zn2+] = 2.5 M and [Pb2+] = 1.5 × 10-4 M Pb2+ (aq) + Zn (s) ? Zn2+ (aq) + Pb (s)
How many grams of acetylene are produced by adding water to 5.0 grams CaC2
Ammonium nitrate is a common ingredient in fertilizers that can also be used to make explosives because it decomposes as follows
Sorbose, C6H12O6, is used in making vitamin C. A sorbose sample containing 96.0 g of carbon atoms also contains ____ g of hydrogen atoms.
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