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Problem- Suppose you dissolve a commercial aspirin tablet in enough water to create 1000 mL of solution (Solution A). You then remove 24.9 mL of this solution and dilute it to 656.0 mL to create Solution B. You then determine that Solution B has a molarity of 0.00042. What was the concentration of Solution A?
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a sample conaining both hcl and hno3 had a density of 1.083gml. a 30.00 ml amount of this sample required 25.78 ml of
An oxalic acid solution contains the subsequent species in varying concentrations- C2H2O4,C2HO-4,C2O2-4, and H+. Depict Lewis structures of C2HO-4, and C2O2-4. Which of the above four species can act merely as acids which can act only as bases, ad..
A 0.221g sample containing an unknown amount of monoprotic Base was reacted with 25.00ml of 0.101M HCl. The resulting solution was titrated with 10.55mL of 0.112M NaOH solution. Explain how many moles of base were present in the unknown sample
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Determine the empirical formula and draw a possible structure for an organic compound with the elemental composition
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From your current perspective, what do you think the greatest threat is to human health resulting from pollution? Why do you think so?
To find the pKa of X-281, you prepare a 0.087M test solution of X-281. The pH of the solution is determined to be 2.40. What is the pKa of X-281?
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
zinc sulfide is treated with sulfuric acid leaving a solution withsome undissolved bits of material and releasing
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