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What indicates that the pK of an acid is numerically equal to the pH of the solution when the molar concentration of the acid and its conjugate base are equal?
1. a sample of n2 gas occupies 2.40 l at 20?c. if the gas is in acontainer that can contract or expand at constant
What is the value of Kc for the decomposition of ammonium carbamate into ammonia and carbon dioxide?
The density of acetonitrile (CH3CN) is 0.786g/ml, and the density of methanol (CH3OH) is 0.791g/mL . A solution is made by dissolving 21.5 mL (CH3OH) in 98.9 mL CH3CN. a) What is the mole fraction of methanol in the solution
Complete and balance the following skeleton reaction and identify the oxidizing and reducing agents.Hint: the pH of the resulting solution is lower than the pH of the initial solution.
Problem- If 10.95 mL of a standard 0.1080 M KOH solution reacts with 58.85 mL of CH3COOH solution, what is the molarity of the acid solution
Assume that all ethanol is transformed into CO2 and assume the lake contains 10^8 liters of water. Explain your answer with the chemical reaction involved and any assumptions you make.
What happens to the data when the precipitate, Ca(IO3)2 is not rinsed with distilled water?
Predict the intensities of the peaks at masses 57 and 114 in the spectrum of 2,2,3,3-tetramethylbutane. Support your answer with its corresponding fragmentation reaction.
How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto bumper with a total area of 0.32 m2 from a solution containing CrO42-? The density of chromium metal is 7.20 g/cm2.
The standard electrode potential for the following reaction is -.57 V. What is the potential at pH = 12. TeO32- [1M] (aq) + 3H20 (l) + (4e-) ----> Te (s) + 6OH- (aq)
A gas sample containing 1.60 mol at 25°C exerts a pressure of 391 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container? ..
Calculate the difference in slope of the chemical potential against temperature on either side of (a) the normal freezing point of water and (b) the normal boiling point of water.
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