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In a paper chromatography experiment, we put our chromatograms in a few mL of a acetone/concentratedHCl/distilled solution. After we had recorded some data we then exposed them to NH3, dimethylglyoxime, and NaOH. What was the purpose of exposing them to these different solutions?
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base.
capacity contains fluorine gas at a pressure of 160. lb/in^2 at 26° C. What volume will the gas occupe at STP? (1 atm = 14.7 lm/in^2, F = 19.00 g/mol)
If you have 4.63 g of caffeine dissolved in 69.9 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH22Cl2 layer if you use 62.9 mL
Write a balanced half-reaction describing the oxidation of gaseous dihydrogen to aqueous hydrogen cations.
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag^+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2^+ and the concentration of Ag^+(aq) i..
William places 20 mL of a 2.6 M sulfuric acid solution into a small flask with a few drops of phenolphthalein indicator. He fills a buette with and 1M NaOH. How many mL of the NaOH solution will he use when the solution in the flask just turns pin..
.80g of hydrogen chloride () is dissolved in water to make 4.5L of solution. What is the pH of the resulting hydrochloric acid solution
Calculate the percent water: mass of water lost / mass of hydrated salt x 100%. E. Write the empirical formula for hydrated alum, based on your experiment.
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 M NaOH. Ksp = 3.0 × 10-16 for Zn(OH)2, Kf = 3.0 × 1015 for Zn(OH)42-
If I have .0888g of potassium hydrogen sulfate, its density is 2.322g/mL and its molecular weight is 136.17g/mol how many mols do I have
Consider the four polysaccharides amylose, spartylose tarhylose and ranylose. Amylose is the unbranched polymer of a-(1Ã 4) linked glucose molecules found in starch, while spartylose, tarhylose and a Blue Devylosea
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