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What is the expected freezing point of a solution prepared by dissolving 4.25g of naphthalene (C10H8) in 26.4g of benzene (C6H6)? T-5.53C and K-5.12C
A gaseous mixture of O2 and N2 contains 40.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 405mmhg
Is there an easy way to get a quick and dirty comparative coefficient of friction for water vs a solution of sodium bicarbonate and water? I only have the most basic of chemistry skills. Is there a chart you could point me to?
Write a complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone. Show all intermediate structures and all electron flow with arrows.
A beaker with 145mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M
In a precipitate lab, if the step for digesting the precipitate were omitted, what would be the probable consequence of reporting the "percent limiting reactant" in the salt mixture? Explain.
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
A solution of 1-pentanol and butanoic acid in ether is shaken with aqueous sodium bicarbonate (NaHCO3) solution. Which of the following correctly describes the major organic contents of the two solutions? Can you explain the answer you chose
what is the theorectical yield of disulfure chloride? what mass of the excess reactant reamains when the reaction is completed?
Aspirin (acetylsalicylic acid,C9H9O4 ) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00g of aspirin in 0.600L of water and measured the ph. What was the Ka value calculated by the student if the pHof..
What is the entropy change if two mole of liquid water is heated from 20 C to 100 C under constant pressure? Cp=75.5 J/mol*K over this temperature interval
What is the pH of a 1.3 * 10^-7 M solution of benzoic acid at 25C. pKa of benzoic acid is 4.19 at 25C. (Might have to take into account the autoionization of water).
liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. suppose 74 grams of octane is mixed with 148 grams of oxygen
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