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In point form, what is the procedure for extraction to separate a mixture of benzoic acid and 2-naphthol and to isolate each compound. Include observations and conclusions for each step. If an unknown acid was imcompletely extracted from the ether solution into the aqueous layer in this experiment, would the experimentally measured melting point value of benzophenone be affected? Why or why not?
An air stream's humidity is increased by combining it with a stream of water as shown below (hr stands for relative humidity). The water evaporates and increases the moisture content of the air stream. Determine the mass flow rate of stream B
Consider the reaction CaCN2 + 3 H2 O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced?
Compute pH of a solution containing .030 moles of TRIS and .020 moles of the salt TRISHCl in a total volume of 1.50L
What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.30 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
Calculate the overall energy changes (in kJ/mol) for the formation of MgF and MgF2 from their elements. The lattice energy for MgF2 is + 2952 kJ/mol.
The KHP you used had not been dried. b) When filling the buret with NaOH you left a air bubble in the buret tip.The bubble was released during your first KHP titration.
Ethanol normally boils at 78.4C. the boiling point elevation constant for ethanol is 1.22C/m. what is the boiling point of a 1.0 m solution
determine the volume occupied by .582 moles of a gas at 15*C if the pressure is 622 mm Hg?
Choosing CO^2+, write a series of two balanced chemical equations representing the reaction that occurs when HCl and NH3 are added to an aqueous solution of the transition metal cation.
what is the concentration ratio of the free (and potentially toxic) Pb^2+ (aq) in the blood to the much less toxic Pb^2+ -EDTA complex
what is the ph of a buffer solution prepared from equal volumes of .25 m sol of a weak acid and .025 m sol of the salt of that weak acid. the acid has a pka of 4.82
Suppose that you have a 2.0 L sample of hydrogen at 1.00 atm and 59 C. If you heat the sample to 84 C and it expands to a volume of 3.7 L, what will the final pressure be?
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