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Think benzene (C6H6) in the gas phase. State the reaction for breaking all the bonds in C6H6 (g) and find out the enthalpychange for the reaction.
What is the half-life of a compound if 78 percent of a given sample of the compound decomposes in 45 min? Assume first-order kinetics.
A 4.50G sample of LiCl at 25.0 degree celcius dissolves in 25.0 mL of water also at 25.0 degree celcius. The final equilibrium temperature of the resulting solution is 60.8 degree celcius. What is the enthalpy of solution of LiCl expressed in kilo..
Consider the Lewis structure for the polyatomic oxyanion shown below, where X is an element from the 3rd period (Na- Ar). By changing the overall charge, n, from 1-to 2 -to 3 - we get three different polyatomic ions.
Calculate the concentration of a solution prepared by dissolving 10.0 grams of NaNO3 in enough water to give 250.0 mL of solution
In the photosynthesis reaction, how is the equilibrium yield of glucose(C6H12O6) affected( increaed, decreased, no change) by the following action water is added.
What is the IUPAC substitutive name of the organic product formed in the reaction between cyclohexanol and phosphorus tribromide
What is the temerature in C of gas if the volume is changed to 5.79 L and the pressure is changed to 765 mmHg if the gas originally has a volume of 4.00 L, a temp of 298 K, and pressure of 782 mmHg
A 0.2088g sample of an unknown monprotic acid is titrated with 22.10 ml of 0.1000 mol/L KOH. The pH of the solution after the addition of 22.10 ml of base is 5.02. What is the Ka for the acid?
A solution is prepared by mixing 50.0 ml of ethanol with 300.0 ml of water what is the precent of ethanol in this solution. assume the volumes are additive.
substance A has a smaller heat of vaporization than substance B. Which will undergo a larger change in vapor pressure for a given temperature
a sample of hydrogen occupies a volume of 1.20 liters at a pressure of 425 kilapascals. if the temperature of the gas
a sample of helium gas initially at 37 degrees celsius, 785 torr and 2.00L was heated to 58.0 degrees celcius while the volume expanded to 3.24L. What is the final pressure in atm.
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