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hydrofluoric acid is used to etch class and as a precursor in the production of prozac. it exists in aqueous solution and has a molar mass of 20.01 g/mol. Achemist dissolves a 0.2001 g sample in 20.0 nL and titrates it with 0.400 M NaOH. What is the pH at the equivalence point? what is the pH at the 10.0 mL base added? what is the pH at the 30.0 mL base added?
Predominant Organic Acids Present in Softwoods such as Pine, A wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce.
which of the following shows the acids in order from strongest to weakest? The order of atomic radii is I > Br > Cl
The first ionization energy of bismuth is Ei1 = +703 . What is the longest possible wavelength of light that could ionize an atom of bismuth?
Determine the calculated pH of the solution if initially there is 2.0mL of CH3COOH at an initial concentration of 0.89M and 0.80mL of 1.0M Hydrochloric Acid is combined.
Calculate the concentration of ethanol in wine in terms of mass percent and molality. mass percent: (answer in percent) molality
Calculate the internal energy change (delta(U)) for vaporization of 100 g of CI2(l) at this temperature and 1 bar? (b) Calculate its molar entropy change (delta(S)) for vaporization at this condition.
Calculate the standard reduction potential for the reaction for the reaction Cu(III) to Cu(II).
0.755 mole of bismuth oxide reacts with an excess of carbon to form bismuth metal according to the following reaction: Bi2O3(s) + 3 C(s)-> 2 Bi(s) + 3 CO(g) How many moles of Bi form?
Explain the following observations. 1. Aziridines, compounds that contain nitrogen in a three-membered ring, undergo pyramidal inversion much more slowly than do other alkylamines
Gold can be hammered into extremely thin sheets called gold leaf. If a 202-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft multiplied by 1.0 ft, what is the average thickness of the sheet in meters?
Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
Calculate the pressure difference between CH4 and an ideal gas under these conditions. The van der Waals constants for CH 4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol.
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