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Potassium hydrogen phthalate (KHP) is utilized as a primary standard acid to accurately determine the molarity of a NaOH solution via a titration. The neutralization reaction between KHP and NaOH is shown in the lab manual. The formula of KHP is KHC8H4O4 and has a molar mass of 204.23 g/mol. If 32.50 ml of a NaOH solution are required to exactly neutralize 0.231 g of KHP, explain what is the molarity of the NaOH solution?
Why is the angular momentum of some nuclei and molecules observable. How is it observed? What are some typical results.
A solution is made by adding 0.51 mol of lithium hydroxide (LiOH) in enough water to form 5 L of solution. Calculate the pH.
the initial volume of a gas cylinder is 750.0 ml. if the pressure of a gas inside the cylinder changes from 840.0 mmhg
Explain the fact that even though dibenzoylmethane (C6H5COCH2COC6H5) is not a methyl ketone, it gives a positive iodoform test when treated with the NaOH and I2.
Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 amu. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.
The standard reduction potentials listed in any reference table are only valid at standard-state conditions of 25 C and 1 M. To calculate the cell potential at non-standard-state conditions, one uses the Nernst equation
One of the treatment for gangrene and "the bends" is a hyperbaric oxygenation. this occurs in a chamber in which oxygen is used at higher than normal pressures.
If the standard enthalpy of combustion of octane, C8H18(l), at 298 K is -5471 kJ x mol-1, calculate the standard enthalpy of formation of octane. The standard enthalpies of formation of carbon dioxide and liquid water are -393.51 and -285.83 kJ x ..
Calculate the velocity (in units of m/s) of an electron having a mass of 9.09 x 10 -28 g and wavelength of 99.9 nm
If the average molar mass of a sample of soybean oil is 960, how many grams of are needed to saponify 2.5 of the oil
A 13 mL sample of a solution of Pb(ClO3)2 was diluted with water to 17 mL. A 15 mL sample of the dilute solution was found to contain 0.027 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution?
at 900 k the following reaction has kp 0.345.2 so2g o2g 2 so3gin an equilibrium mixture the partial pressures of so2
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