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Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5 C to 179C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
a buffer composed of .250 mol H2PO4- and .250 mol HPO4^2- diluted with water to a volume of 1.00L. the pH of the buffer is 7.210 how many moles of HCl must be added to decrease the pH to 6.700
Describe the outcome that would be expected from Rutherford's experiment if the charge on the alpha particles had remained the same but the nucleus was negatively charged. If the nucleus were neutral, what would have been the outcome
The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate: 2NH4 Cl(s) + Ba(OH)2 * 8H2 -----> 2NH3(aq) + BaCl(aq)
What is the change in the boiling point of a solution made by dissolving 14.7 g of C6H12O6 into of water. the density of water is and.
how many moles of glucose, C6H12O6 can be burned when 60.0 mol of O2 is available?
Calculate the standard emf of a cell that uses the Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25°C
The biologist estimates she will need 5100 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres.
When 0.234 g of the hydrate Cr2(SO4)3•xH2O is heated, 0.128 grams of anhydrous Cr2(SO4)3 remains. What is the value of x in the formula for the hydrate
Assuming the enthalpies are equivalent to free energies (they arent, but lets make the assumption for the moment), what are the equilibrium constants for the two equilibria in the gas phase?
Oxygen and sulfur combine to form a variety of different sulfur oxides. some are stable molecules and some, including S2O2 and S2O3
When the following deuterium-labled isomer undergoes elimination, the reaction yields only trans-2-butene and cis-2-butene-2-d.
which works better as a solvent for benzoic acid water or the solvent pair of methanol and water.
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