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The iron content of a municipal water supply was determined by an atomic absorption procedure. The absorbance of the water, after a five-fold dilution, was 0.646 at 248.3 nm. A standard solution, prepared by dissolving 0.1483 g of pure iron wire in acid, diluting to 250 mL, and then making a 100-fold dilution, had an absorbance of 0.813. Calculate the ppm Fe in the water sample.
Determine the change (deltaT/deltaP) in the freezing point of ice with increasing pressure. the molar volume of water is 18.02 cm3 mol^-1 and the molar volume of ice is 19.63 cm3 mol^-1. The molar heat of fusion deltaHfus =6.009 *10^3J mol^-1
A mixture of 2.0 mol of CO(g) and 2.0 mol of H2O(g) was allowed to come to equilibrium in a 10.0L flask at a high temperature. If Kc-4.0, what is the molar concentration of H2(g) in the equilibrium mixture
Can someone please send me a link to the solution manual for Elementary Principles Of Chemical Processes, edition 2.
A graph shows a titration curve. The volume of NaOH at the equivalence point is 25.8 mL. The pH at the equivalence point is 9.0. Calculate the molarity of the NaOH solution.
Sodium carbonate (Na2CO3rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103kgkg of sulfuric acid solution
The (-) enantiomer of a compound has a specific rotation [a]= -86 degrees. A sample of this pure enantiomer, when measured in a two dm sample tube, gives an observed rotation
If 10 grams of citral (C10H16O) are burned in excess oxygen, what is the mass of water and the mass of carbon dioxide that will be produced
As the temperature continues to increase, the probabilities temperature continues to increase, the probabilities will reach a limiting value. What is this limiting value?
To what volume should you dilute 44.0 mL of a 4.60 M KI solution so that 28.5 mL of the diluted solution contains 3.65 g of KI
Liquid helium at 4.20 K has a density of 0.147 g/mL. Suppose that a 1.50 L metal bottle at 110 K contains air at 3.0 atm pressure. If 50.0 mL of liquid helium are added to the bottle
Assume that the density of the mixed solutions is 1.00 g/mL, that the specific heat of the mixed solutions is 4.18 J/(g celcius), and that no heat is lost to the surroundings. The deltaHrxn for the neutralization of NaOH with H2SO4 is -114 kJ/mol ..
When 10.00 g of vitamin B6 is burned in oxygen, 19.88g of CO2 and 4.79 g of H2O are obtained. Another experiment shows that vitamin B6 is made up of 14.89%N. What is the simplest fourmula for vitamin B6
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