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Compute the pH of a solution of 30mL of .0580 M malonic acid while it is titrated to the second equivalence point with .100 M KOH.
the first ionization energy of lead pb is 716 kjmol. if a pb atom is ionized using a photon of ultraviolet radiation
The total volume of seawater is 1.5 1021 L. Assume that seawater contains 3.1 percent sodium chloride by mass and that its density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. (1 ton = 2000 lb; 1 lb = 453.6 g..
Which of the following aqueous solutions has the highest boiling point. Kb for water is 0.52 degrees C/m.
vinegar is a 5.0% solution by weight of acetic acid (CH3CO2H)in water. given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
an ice cube tray holds 515 g water. if the water initially has a temperature of 21degc how many kilojoules of heat must
in tropospheric chemistry the decomposition of n2o5 is an important process. the half life for the first order
A 20-g mass of argon occupies 15.0 l at a pressure of 25 kpa . find the volume of the argon when the pressure is increased to 530 kpa.
explain the following statement: A catalyst provides an additional reaction pathway with an increased overall reaction rate. It is an active participant in the chemical reaction but is not consumed by it.
A buffer was formed by mixing 50.0 mL of 0.206M NH4Cl(aq) with 45.0 mL of 0.222M NH3(aq) {Kb (NH3) = 1.8 x10-5 } . What is the pH of this buffer solution?
The rate of a first-order reaction is followed by spectroscopy, monitoring the absorption of a colored reactant at 520 nm. The reaction occurs in a 1.48- cm sample cell, and the only colored species in the reaction has an extinction coefficient of..
the solubility of nitrogen n2 in blood at 37 degrees celsius and at partial pressure of 0.80 atm is 0.00056 moll.a
Derive an expression for the partition function for a molecule with two states separated by energy hν (i.e. ε1 = 0 and ε2 = hν). If we consider a canonical ensemble of N such molecules, derive expressions for the total internal energy and the heat..
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