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The enthalpy change for the reaction of 50.0ml of ethylene with 50.0ml of H2 at 1.5atm pressure (problem ^H= 0.31kj. What is the value of ^E?
Give the bond angle and describe the shape around the central atom designated in this molecule.
Calculate the volume of carbon dioxide at 20.0 degrees C and 0.910 atm produced from the complete combustion of 5.00 methane. Compare your result with the volume of CO2 produced from the complete combustion of 5.00 kg of propane (C3H8).
For reaction a+ b = c the colorless reactants produce deep red complex. Heating makes the color dissapear. Once cooled the deep red color retuns
A zero-order reaction has a constant rate of 1.90×10-4 . If after 40.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
the complex ion cocn6-3 absorbs a photon of wavelength 2.90times102 nm. what is the splitting energy of this
The vapor pressure of liquid Ni is 0.100 torr at 1606 degrees C and 1.00 torr at 1805 degrees C. The molar heat of fusion of Ni is 3.25 kcal/mol. Determine the vapor pressure of solid Ni at 1200 degrees C.
Plutonium-239 is a byproduct of the fission reaction used to produce energy in nuclear power reactors. It has a half-life of 24,400 years. A student determines that it will take 97,600 years for the radioactivity of a Pu-239 sample to drop to one-..
the set of transitions where the electron falls from a higher level to the nf = 4 state is called the Pickering series, an important series in solar astronomy. Calculate the Pickering series wavelength associated with the excited state ni = 8.
What is the molarity of a solution produced by dissolving 31 g of Cu(NO3)2 in a 100 mL volumetric flask?(Enter unit as M.)
three solutions are mixed together to form a single solution. one contains 0.2 rm mol rm pbch3coo2 the second contains
How many liters of H2 at 23.0C and 733mm Hg are released when 1.98g of Na reacts with unlimited water?
The titration required 35.46 mL of 0.1052M Na2S2O3 solution. A faded price label on the gallon bottle read $0.79. The density of the bleaching solution was 1.10 g/mL Calculate the number of moles of S2O32- ion required for the titration
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