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Calculate the percent error in your Hess's Law enthalpy value (-686 kJ/mol). The accepted textbook value is -601.7kJ/mol.
Draw all of the stereoisomers that result when (E)-but-2-ene is hydrogenated with D2 over a metal catalyst.
The rate of decrease in N2H4 partial pressure in a closed reaction vessel from the reaction N2H4(g)+H2(g)?2NH3(g) is 80torr/h . What is the rate of change of NH3 partial pressure in the vessel?
when 395.0 g of acetylene burns, how many kilojoules of heat are given off. (c) how many grams of co2 form? (d) how many liters of o2 at 298 k and 15.6 atm are consumed
a sample of He gas has a volume of 900 mL and a pressure 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450 mL?
How much work is done in kilojoules as a result of the reaction shown. 2.5 atm with a volume of 2L --> 2.5 atm with a volume of 3L
what is its characteristic wavelength? hint recall that the kinetic energy of a moving object is e12mv2 where m is the
10.0mL of a solution that contained 0.0300g of an unknown complex Ni salt. You titrated that 10.00 mL with a 0.005 M EDTA solution; 26.58 mL of EDTA was needed to reach the endpoint. Knowing that the Ni2+ reacts with EDTA in the mole ratio of 1 to..
Calculate the 'size' of a hydrogen atom in its ground state according to this definition. Go on to explore how the 'size' varies as the definition is changed to other precentages, and plot your conclusion.
since the freezing point of a solution depends on the relative number of particles what would you caclcuate to be the
What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a pH of 5.20? [Ka(C6H5COOH) = 6.5 * 10-5]
In 2008, carbon dioxide levels at the South Pole reached 385 parts per million by volume. (The 1985 reading was 314.6 ppm by volume.) Convert the 2008 reading to a partial pressure (in bar).
calculate the energy involved in the conversion of 272 g of steam at 373 K to ice at 243 K. Be sure to use the correct sign.
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