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Given the Ksp values for PbCl2 of1.6*10-5 at 25oC and 3.3*10-3 at80oC, if 1.00mL of saturated PbCL2(aq) at80oC is cooled to 25oC,will a sufficient amount of PbCl2(s) precipitate to be visible? Presume that you can detect as little as 1 mg of the solid.
What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.106g
The decomposition of H2O2 is a first order reaction. Consider H2O2 has its initial concentration as 2.32M. What will be the concentration at t=1200 seconds? Use k=7.30*10^-4*s^-1
If a sample of 0.230 grams of KCN is treated with an excess of HCL, calculate the amount of HCN formed, in grams.
calculate the specific heat of a substance if a 35 gram sample absorbs 28 joules as the tempature is raised from 292 kelvin to 313 kelvin.
Identify the set of stoichiometric coefficients that balance the reaction equation for the combustion of octane. C8H18+O2--->CO2+H2O
Write balanced chemical equations for the reactions involved when salicylic acid is dissolved in aqueous NaOH and when salicylic acid is precipitated from a sodium salicylate solution by addition of HCl
addition of hbr to 1-phenylpropene yield only 1-bromopropylbenzene.propose a mechanism for the reaction and explain
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
If potassium ion is in solution, the ion could be reduced to potassium metal. In acidic solution, which would be more thermodynamically favorable: the reduction of K+ or the reduction of H+
Calculate the volumetric size of a water molecule in vapor, assuming 1 mole of the vapor occupies 22.4 L, as if the vapor were an ideal gas. Give answer in angstroms, two significant digits.
Set up the full multiplication table for the group operations for the ammonia molecule. Explain what is its point group? Illustrate the derivation of the symmetry classes for this point group.
Consider the compression of the gas in the right part to be a reversible process. a) calculate the work done on the right part in this process and the final temperature in the right part
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