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The combustion of one mole of ethanol (C2H5OH(I)) to produce carbon dioxide as well as gaseous water has Hr= -1235 kJ mol-1 at 298 K. Explain what is the change in internal energy for the reaction?
What are the differences between dipole dipole, ion dipole and London Force. I am really confused by the concepts of these and the polarity as well.
The second virial coefficient of methane can be approximated by the empirical equation , where a = -0.1993 bar-1, b = 0.2002 bar-1, and c = 1131 K2 with 300 K
About 6*109 g of gold is thought to be dissolved in the oceans of the world. If the total volume of the oceans is 1.5*10 21 L. Define what is the average molar concentration of gold in seawater
Consider the titration of 100ml of .100M H2NNH2 (Kb=3.0*10^-6) by .200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added
Calculate the concentration of the acid solution after all the metal has reacted.
Determine the enthalpy of he reaction. Assume that the density and the specific heat of the solution are the same as water. Include the correct sign.
When 50 mL of 2M HCl(aq) is added to 50 mL of 2M NH3(aq), how much NH4Cl is formed?
what is the [OH-] in a solution that has a pOH of 2.70? Use E notation with 3 significant figures.
An ENVIRONMENTAL SCIENCE CLASS
the usefulness of the addition of an internal retention time standard that elutes near the end of the chromatogram
Write both an equations using Lewis Structures and a balanced chemical equations for the following reactions: Silicon atoms and Chlorine molecules Lithium atoms and Bromine molecules Ethylene molecules
What effect does adding an enzyme to a reaction have on this? On delta G? What are the roles of delta G in biochemical reactions (list two)?
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