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The unimolecular decomposition of N2O5 has an activation energy of 102 kJ/mol and H= + 55 kJ/mol. Explain what is the activation energy for the reverse reaction?
Water has a considerably higher boiling point and lower vapor pressure than other molecules of similar or larger molar mass. For example, dinitrogen (N2), methane (CH4), etc.
What volume of CO2 gas is produced by the complete combustion of 2.6L (C3H8) gas? Assume all gas volumes are measured at the same temperature and pressure. C3H8 + 5O2 ---> 3CO2 + 4H2O
Maintenance of pH is vital to the cells of all living organisms because enzyme activity is influenced by pH. What is the intracellular pH range of most cells?
1. A corrosion technologist pipetted a 100.00 mL hard water sample and titrated it with 37.64 mL of 0.01 M EDTA solution for a total hardness endpoint, and 29.32 mL of 0.01 M EDTA solution for a calcium endpoint.
Calculate the pH at the equivalence point in the titration of 50 ml of 0.10 M methylamine with a 0.20 M HCl solution.
Create an 8-step procedure for obtaining aspirin crystals from the reaction mixture. Make sure you indicate what materials and equipment you expect to use.
The shares of American Greetings are currently trading at an EBITDA multiple
Be sure to include a concise discussion of the reasoning. Construct tables summarizing the IR and 1H NMR data, and assign the peaks in the IR and NMR spectra to the appropriate structural elements in U. Explain the appearance of the base peak at m..
The percent by mass of bicarbonate (HCo3-) in a certain Alka-Seltzer product is 32.5%. Calculate the volume of CO2 generated in ml at 37 degree C and 1 atm when a person ingests a 3.29 g tablet.
A solution is prepared by dissolving 19.1 g ammonium sulfate in sufficient water to make100.0 mL of stock solution. A 15.00 mL sample of this stock solution is added to 55.00mL of water. Compute the concentration of ammonium ions and sulfate ions ..
Calculate the molarity of a solution made by adding 27.8 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask, then adding water
Calculate the delta G at 400K for the following phase change: Sulfur(monoclinic) to sulfur rhombic. Do not assume that delta H or delta S are independent of temperature
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