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The retention volume for a solute was found to be 76.2 mL for a column with Vm = 16.6 mL and Vs = 12.7 mL. Compute the capacity factor and the distribution coefficient for the solute.
Mass of mineral sample = 0.123 g The Na2SO4 in the sample is converted to insoluble BaSO4. The mass of BaSO4 is 0.177 g What is the mass percent of Na2SO4 in the mineral?
Calculate the equilibrium constant for the photodecomposition of ascorbic acid (vitamin C) in a poorly packaged fruit, such as guava. 165g of guava contains 0.377g of ascorbic acid.
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
Calculate the amount of heat in J required to heat 2.00 grams of ice from -12.0 C to 88.0 C. The heat of fusion of water is 6.02 kJ/mol the specific heat capacity of ice is 2.09 J/gC
the enthalpy of formation of ethanol, C2H5OH, is -277.0 kJ/mol at 298.15k. calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 (g) and H2O.
At 900K the following reaction has Kp=0.345. 2SO2 + O2->2SO3. In an equilibruim mixture the partial pressure of SO2 and O2 are 0.145 atm and 0.470 atm respectively. What is the equilibruim partial pressure of SO3 in the mixture
Write the rate laws and determine the units of k (the rate constant) for the following reactions: (a) The reaction A + 2B --> C is found to be second order in A and B, and third order overall
if 7.0 moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end?
An excess sample of solid Ag2SO3 is added to 100 mL of water. After equilibrium is achieved between the solid and its aqueous ions the silver ion concentration is found to be 2.486e-05 Use this information to find Ksp for Ag2SO3
Calculate the pH of a 100 ml solution containing 1.00 g of imidazole (FM 68.08) and 1.00 g imidazole hydrochloride (FM 104.54). pKa of imidazole is 6.993. How many ml of 1.07 M HClO4 should be added to 1.00 g of imidazole to give a pH of 6.993
A solution of 0.2113 g of water dissolved in 25.0 g of a solvent freezes at 11.5 °C below the freezing point of the solvent. What is Kf for this solvent?
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)
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