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The activation energy of a certain reaction is 44.5kJ/mol . At 21, the rate constant is0.0110 s^-1 . At what temperature in degrees Celsius would this reaction go twice as fast?
Write out the reaction mechanism for conversion of acetylferrocene to diacetylferrocene using acetic anhydride and 85% phosphoric acid.
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
Estimate the triple point of water using the clapeyron equation and the boiling and freezing points at 1 bar. Use 1.00 g*cm^-3 for the density of liquid water
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 2.00 mL of a 10.1 ?g/mL solution of Co.
For a particular orbital, as one goes away from the nucleus along the z-axis, the probability desity decreases to zero, then increases, and finally decreases without increasing a second time. This is consistent with
In the titration, 20.46 mL of the sodium hydroxide was used to react with 0.1082 grams of KHP. What is the molarity of the NaOH?
Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.)
Acetylene gas (C2H2) is produced as a result of the reaction CaC2+2H2O-->C2H2+Ca(OH)2 If 16g of CaC2 are consumed in this reaction, how much H2O is needed? answer in units of mol.
A machine does 300.0 kJ of work on the environment, and emits 200.0 kJ of heat. What is the change in internal energy of the machine?
A solution of water at 30 degrees Celsius is placed in a freezer at a constant temperature of -8 degrees Celsius. Calculate the entropy change of the system, surroundings, and the universe.
This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?
calculate acidic and basic buffer capacity. How much of strong acid should be added to shift buffer pH one unit down, and how much of the strong base is needed to bring buffer pH one unit up?
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