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The pH of a sodium acetate-acetic acid buffer is 4.90. Calculate the ratio [CH3COO- ] / [CH3COOH ].
When o-phthaladehyde is treated with base, o-(hydroxymethyl)benzoic acid is formed. Show the mechanism of this reaction.
tim and a friend left a campsite on a trip down a river in a canoe maintaining a constant speed of 4 miles per hour.
if the activation energy is 55kJ/mol, determine the rate constant at 26 celcius. dinitrogen tetroxide decompses to nitrogen dioxide with a rate constant
What wavelength (in s-1) of light would be required to change the vibrational number from n=0 to n=4, assuming O-H acts as a harmonic oscillator?
Write the full symbol for each isotope (give both A and Z for each isotope). How many protons, and how many neutrons are present in the nucleus of each isotope?
Rubidium chloride adopts the rock salt structure. Compute the radius of the rubidium ion if the density of RbCl is 2.76g/cm3 and it is assumed that the ions touch along the edges of the unit cell.
250 word essay, references, question worth 50 pointsIdentify the factors that determine the fate of chemicals in the air and provide a brief discussion for each.
How many grams of water can be cooled from 30 degrees C to 18 degrees C by the evaporation of 49g of water? (The heat of vaporization of water in this temperature range is 2.4kJ/g . The specific heat of water is 4.18J/k
Write a balanced equation for the combustion of the following hydrocarbon, a high-octane component of gasoline. Do notinclude states of matter in your answer.
Calculate the standard free energy change and the equilibrium constant for the following reaction at 25°C: (all aqueous solutions are 1 M) Au(s) + Ca2+ (aq) ? Au3+(aq) + Ca(s)
Problem- A block has a mass of 16.07 g and sides of length: 12.9 mm, 14.9 mm, 15.8 mm. What is its density in g/cm3
Write a balanced chemical equation for the formation of CH3OH (l) from the elements in their standard states.
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