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How many faradays of electricity are required to produce 0.84L of O2 at exactly 1 atm and 25 degrees Celcius from aqueous H2SO4
Assuming the final concentration of chloride anion after the addition of hcl (precipitation step) was 0.1M what is the remaining concentration of Ag in the solution
A 2.50-L container is filled with 187 g argon. If the pressure is 10.0 atm, what is the temperature?
Predict the sign of the entropy change for the following reactions and tell whether the reactions are spontaneous or nonspontaneous. a. C8H16 (g) + H2(g) ? C8H18 (g) b. C2H5OH (l) + 3O2(g)? 2CO2 (g) + 3H2O (g)
A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
Complete combustion of 3.40 of a hydrocarbon produced 10.4g of CO2 and 4.98g of h20. what is the emperical formula for the hydrocarbon
Copper(I) chloride is a slightly soluble salt. The copper(I) ion also combines with Cl- in excess chloride to form the complex ion CuCl2-. Calculate the molar solubility of CuCl(s) in 0.0667 M KCl.
Which of the following set of quantum numbers (ordered n,l,ml,ms) are possible for an electron in an atom
the ha monoprotic acid is dissolved in h2o calculate ka and pka for the acid ha if the equilibrium concentrations of
Calculate H rxn for this reaction and compute how much heat is produced from a hand warmer containing 15.0 grams of iron powder.
How many valence electrons are there in a Cr atom, Which of the following 1M solutions will have the highest concentration of ions
Citronellol or dihydrogeraniol is a naturally occurring oil. The IUPAC name for citronellol is 3,7-dimethyl-6-octen-1-ol. (+)-Citronellol, which is found in citronella oils, is the more common isomer.
what is the purpose of the trail titration. describe the endpoint of the a titration. how will you know when you have reached it. explain why the walls of the flask are washed with distilled water during the titration.
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