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Define and show the chromatographic behavior comparison of fluorene and fluorenone. Illustrate spectral features comparison.
If an enzyme-catalyzed reaction proceeds at 25% maximal velocity at 5 mM substrate concentration, calculate the Km of the enzyme.
in industry sodium carbonate is produced in two stages whose equations are as followsnacl nh3 h2o co2 agrave nh4cl
A 1-in. thick steel plate measuring 10 in. in diameter is heated from below by a hot plate, its upper surface exposed to air at 80oF. The heat-transfer coefficient on the upper surface is 5 Btu/h ftoF and k for steel is 25 Btu/h ftoF.
For your unknown titration, indicate whether the pH at the equivalence point should be equal to 7.0, greater than 7.0, or less than 7.0. Explain your choice, including the appropriate balanced net ionic equation.
as a system increases in volume it absorbs 52.5 j of energy in the form of heat from the surroundings. the piston is
How many grams of CaH2 are needed to generate 19.0 L of H2 gas if the pressure of H2 is 780. torr at 15 C?
Calculate the vapor pressure of water, in torr, above a solution prepared by dissolving 60.20 g of PbCl4 in 421.0 g of water at 343.0 K. The vapor pressure of pure water at 343.0 K is 233.7 torr.
THe first equivalence point was reached after the addition of 15.25 mL of base. THe second equivalence point was reached after the addition of 30.98 mL. Find two values for the molarity of H3Y in the original sample.
a) What is the molarity of the acetic acid? b) If the density of the vinegar is 1.006 g/cm3, what is the mass percent of acetic acid in the vinegar.
Write a balanced equation for the reactant, then identify the type of reaction it demonstrates remember your diatomic atoms complete reaction
Compute the momentum of a water molecule at normal conditions, assuming its kinetic energy
20 kg of gas burns with 83kg of oxygen produces how much total mass of carbon dioxide and water?
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