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Calculate the entropy and the free energy of mixing for ethanol and water at 25c if the mass percent of ethanol is 15
Calculate the pH of a 0.50 M aqueous solution of NH3. The Kb for NH3 is 1.8 x 10-5.
Titration of the excess unreacted EDTA required 11.6 mL of 0.0200 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
If we assume that the volume change is due entirely to the density change (that is, neglect thermal expansion of the ice/water), what is the difference between the enthalpy change and the energy change during the process? Is this a significant dif..
Displays the volume and pH at which equivalence was reached and plots this point on the graph and validates the code by plotting the midpoint using both methods and displaying the volume and pH for both methods in the Command Window.
The gas-phase reaction Cl(g)+HBr(g) => HCl(g)+Br(g) has an overall enthalpy change of -66kJ. The activation energy for the reaction is 7kJ. What is the activation energy for the reverse reaction?
Draw the structure(s) of the epoxide(s) you would obtain by formation of a bromohydrin from cis-3-heptene, followed by treatment with base
Calculate the molar heat of vaporization of a substance given that 0.383 mol of the substance absorbs 24.1 kJ of energy when it is vaporized.
What is the chemical name for CuSO4? a. Copper sulphate b. Copper sulphur oxide c. Copper (II) sulphate d. Copper (I) sulphate
referring to the heating/cooling curve of a pure substance. Identify the line segment on the following diagram where the specific heat of the liquid is used to calculate energy flow
KEtones also undergo the aldo condensation, although a succesful reaction often requires "enhanced" conditions, since the addition involves an unfavorable equilibrium constant.
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions.
How do you calculate the pH when 0.2 moles of NaOH have been added to 1 mole of acetic acid during a titration. The pKa of acetic acid is 4.76.
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