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At a certain temperature, the equilibrium constant for the following chemical equation is 3.50. At this temperature, calculate the number of moles of NO2(g) that must be added to 2.88 mol of SO2(g) in order to form 1.20 mol of SO3(g) at equilibrium.
The pKa of protonated diethylamine is 10.94. What are the major forms present in a dilute soultion that is equimolar in acetic acid and diethylamine
Galvanic cell consists from CO/CO2+ standard electr0de and NI/NI2+ ELECTRODE. At what concentration of nicle electrolyte the theoretical
what is the molarity of acetic acid in vinegar when 19.9 mL of NaOH neutralized vinegar and the molarity of NaOH is 0.2175?
Two seperate samples of argon gas are held seperate chambers connected with a valve in the middle. Chamber A has a bolume of 2.00 L, and contains 120 g of Ar at 650 K
An electron can freely move inside a 500pm x 500pm square box. Find the five lowest energy levels for this electron. Which of them are degenerate?
Calculate the pH of a buffer made with 0.50M phosphoric acid and 0.75M sodium dihydrogenphosphate. Ka = 7.5 x 10-3.
Tripeptide Protein: Acidic, Basic, or Neutral? Alanine has an R-group structure of CH3, cysteine has an R-group structure of HS-CH2, and aspartic acid has an R-group structure of HOOC-CH2
You have pure beta-D-glucopyranose of 100 grams nearly, it was dissolved in an ethanol/water combination with the intention to recrystallize the sugar. You get pure beta-D-glucopyranose crystals 60 grams back why this 40% loss was to happen.
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.6. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.95 M B(aq) with 0.95 M HCl(aq).
Iron has a body-centered cubic unit cell, and a density of 7.87 g/cm3. Calculate the edge length of the unit cell, in pm.
determine the expression for the rate of the reation in terms of the change in concetration of each of the reatants and products.
you have a mixture of oxygen and argon in a 2.50 L container. You know that the oxygen has a mass of 3.44 grams. The total pressure of the gases is 1.86 atm, and their temperature is 22 degrees C.
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