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You require to prepare a 100mM acetate buffer a pH of 5.5. Use the Henderson-Hasselblach equation to compute the number of moles and grams of sodium acetate (NaCH3COO) and the number of moles and mL of acetic acid (CH3COOH;stock is 16.6 M) required to make 1L of the buffer.
at 218degc kc 1.2 10-4 for the equilibrium shown below.nh4hss nh3g h2sgcalculate the equilibrium concentration of
The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 nm and 97.2 nm, respectively.
Write the complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone
Rubidium has a heat of vaporization of 69.0 KJ/mol and entropy of vaporization of 71.9 J/K mol. Compute the boiling point of rubidium.
Cobalt chloride hexahydrate has a formula weight of 237.9 g/mol. How much would you use to make 0.5 liter of a 0.3 M solution
a 25.0 gram piece of ice at 0.0 degrees celsius is added to a sample of water at 8.0 degrees celsius. all of the ice
A system comprised of chloroform, 1,4-dioxane, and ethanol exists as a two-phase vapor/liquid system at 50 degrees C and 55 kPa.
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation
The final equilibrium temperature of the resulting solution is 18.1 C. What is the enthalpy of solution, H, in kilojoules per mole of KBr?
in a seperatory funnel you have 2 phases with both liquids being clear and having roughly the same volume. you know one
Develop a stoichiometry problem that includes finding a mass of reactant/product from another mass of reactant/product.
What is the identity of the second major peak in the chromatogram and what is the third. What is your basis for these assignments
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