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The concentration of manganese in steel can be determined spectrophotometrically by dissolving the steel in acid and oxidizing Mn to MnO4?. The resulting solution is purple and the absorbance at 525 nm can be monitored. A standard solution containing 0.228 mM of Mn has an absorbance of 0.343 in a 1.00 cm cell. The absorbance of an unknown solution of Mn is 0.404. What is the molar concentration of Mn in the unknown solution
Compute the structural analysis of the Protein and What order will the following proteins elute from a caution exchange column loaded at pH 6?
Which of the following reactions involves neither oxidation nor reduction?explain
What is the molar solubility of BaF2 in 0.15M NaF at 25 degrees celsius? Compare the solubility in this case with that of BaF2 in pure water.
A chemistry student needs 60.00 mL of chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48 g x cm^-3.
Predict whether the following reactions will be spontaneous in acidic solution under standard conditions.
a 50 ml solution containing NaBr was treated with excess AgNo3 to precipitate 0.2146g of AgBr. what is the molarity of NaBr in the solution.
Write a mechanism for the reaction. Include arrows to show electron flow. Number and write out each step individually.
Determine the molarity of a solution formed by dissolving 468 mg of MgI2 in enough water to yield
Isotactic polystyrene that has a density of 1.12 g/cm3 and a weight-average molecular weight of 150,000 g/mol; syndiotactic polystyrene that has a density of 1.10g/cm3 and a weight-average molecular weight of 125,000 g/mol
Draw a saturated and unsaturated hydrocarbon with 4 carbons in length and give their IUPAC
What is the concentration of lead ions and sulfide ions in a saturated solution of lead sulfide(PbS) solution at 25 degrees Celsius? (Ksp=3.0x10(to the -10 power)
Determine the chemical formulas for a covalent compound whose molecules contain 2 carbon atoms, 6 hydrogen atoms and an oxygen atom
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