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The percent ionization of octylamine in a .10 M aqueous solution is 6.7%. What is the pH of the solution and the Kb of octylamine?
part 2
a .010 M aqueous solution of a weak acid HX has a pH of 4.00. What is the percentage of dissociation of HX in the solution?
Determine the end value of n for an electron transition in a hydrogen atom if the electron starts in n=4 and the atom emits a photon of light with a wavelength of 486 nm.
The molar enthalpy of fusion of ice at 0 0C is 6.02 kJ/mol; the molar heat capacity of supercooled water is 75.3 J/molK. (a) One mole of supercooled water at -10 0C is induced to crystallize in a heat-insulated vessel.
1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are absorbed for each mole of CH4(g) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
A graduated cylinder contains 148 of water. A 17.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that the silver electrode is positive. Write balanced half-reactions and the overall spontaneous reaction.
Caculations of Glucose. How much glucose is needed to prepare 100.g of a 33% glucose solution 3.5g at glucose 96.3g of H2o
Give the bond angle and describe the shape around the central atom designated in this molecule.
What is the enthalpy of combustion of this fuel in kJ/mol? The specific heat capacity of water is 4.184 J/g-°C.
What is the final concentration of copper in the flask b)what is the uncertainty in the value of the copper concentration?
A sample containing 0.00200 mol sample of Ca(OH)2 requires 10.00 mL of aqueous HCl for neutralization according to the reaction:
If a 10B nucleus absorbs a proton, the radioactive nuclide that is produced may undergo alpha decay. What nuclide is produced in the decay process?
an aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
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