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What is the mole fraction of urea(CH4N2O) in an aqueoues solution that is 36.0% urea by mass?
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid, 0.5 L of 1.0 M sodium acetate and then adding 8 g of solid NaOH (MW = 40.0 g/mol)
What is the concentration of hydroxide ions in pure water at 30 degrees C, if Kw at this temperature is 1.47 x 10 to the -14th
what will heating tert-butyl chloride with 1.oM NaOH in a mixture of water and methanol yeild?
Calculate the pH after the addition of 0.0 mL, 2.0 mL, 4.0 mL, 6.25 mL, 10.0 mL, 12.0 mL, 12.25 mL, 12.5 mL, 13.0 mL, 14.0 mL, and 15.0 mL of the Ba(OH)2.
How many milliliters of 0.100 M NaOH solution are required to neutralize a solution containing 3.92 g H2SO4
a piece of gold jewelry that weighs 9.35 g and has a volume of 0.654 cm3. the density of pure gold is 19.3 gcm3 and the
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. B. As a result of this poor titration technique, is the reported number of moles of B4O5(OH)4^2 would be too ..
what is the free energy change (DG) when protons are pumped across the membrane from the side of the membrane with low concentration to the side with high proton concenration at body temperature (37C)? The membrane potential is 0.06. Report your a..
The osmotic pressure of 0.010M solutions of a non-voliatile electrolyte solure "a" and a non-volitale non-electrolyte solute "b" are 0.605 atm and 0.235 atm respectively
A student obtained Product C [the only product] from an aldol condensation reaction between Reactant A and Reactant B. -Reactant A gave the following results in an elemental analysis experiment: C - 85.66% and H - 6.71%. Determine the structures o..
What is the empirical formula of a hydrocarbon which produces 2.703 g CO2 and 1.108 g H2O
Europium (atomic weight 151.96) has two naturally occurring isotopes with isotopic weights 150.9196 and 152.9209. what is the percentage abundance of the lighter isotope
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