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IN the Determination of phenacetin and acetaminophen by coulumn chromatography,which of the two compounds is likely to seperate first and how does it React with the solvent?
What is Ph of a solution prepared by mixing 100 mL of .0500 M HCL with 300 mL of.5 M HF Ka (HF) = 7.1 x 10-4
C19 H17 Cl F N3 O5 S (all one compound, spaced them so it's easier to see) contains 8 double bonds. How many rings are present. (note treat sulfur as you would oxygen)
What will the following peptides look like structurally at pH 1, pH 7, pH 12. (You will draw 3 structures for each.)
What volume of 3M H2SO4 is needed to neutralize all of the disodium salicylate and the disodium salicylate and the excess of NaOH present after the initial reaction
calculate the mass in kilograms of 3.99 liters of acetic acid. the density of this substance is 1.05g/mL ?
if you prepare a 1.00 m solution of nh4clo4 beginning with water at 26.0c what is the final temperature of the solution
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC? (pKa=4.74 at 25oC for CH3COOH.) Give your answer accurate to two decimal places
A fire truck attaches two fire hoses to a hydrant to fight a fire. Each hose has a diameter of 20 cm. The underground water pipe going to the hydrant has a diameter of 100 cm. In the underground pipe
The Calfhead stream (flow rate 0.05m3s-1) discharges into the Oxhead river (flow of 3.00 m3.s-1). It is proposed to discharge waste into the Calfhead stream but the EPA requires a stream mixing study be undertaken.
Calculate the number of moles of ethanol, (C2H6O) in 250.0 mL sample. Ethanol has a density of 0.76 g/mL.
Explain how spectroscopy could be used by astronomers to assess the habitability of exoplanets and how it might be used to decide whether or not they could have an active biosphere.
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