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For the subsequent reactions, look up the delta Hf values to compute delta H rxn and S values to evaluate delta S system and hence compute delta S universe at 298 K.
a) TiO2 (s) + 4HCl (g) --> TiCl4 (l) + 2H2O (l)
b) CH3CO2H (aq) + CH3OH(aq) --> CH3CO2CH3 (aq) + H2O (l)
c) Hg (s) --> Hg (l)
An unknown compound contains only carbon, hydrogen, and oxygen. Combustion of 4.00 g of this compound produced 5.87 g of carbon dioxide and 2.40 g of water.
A flask containing several moles of liquid benzene at its freezing temperature (5.5 degrees C) is placed in thermal contact with an ice-water bath. When the flask is removed from the ice-water bath, it is found that 1 mole of benzene has frozen
In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm.
A reactant is identified in the context of a redox reaction as an oxidizing agent. Which of the follow statements is false. this reactant is a reactant for the reduction half-reaction
The neutrons interact with with 6Li to produce tritons (nuclei of 3H), which, in turn, interact with the oxygen to produce 18F. What are the two nuclear reactions?
0.500 moll of mgso4. what is the concentration of this solution when expressed in percent massvolume? a0.602 b0.415
The density of a liquid is determined by successively weighing 25, 50, 75, 100 and 125mL of the liquid in a 250mL beaker. If volume of liquid is plotted along the horizontal axis, and total mass of beaker plus liquid is plotted on the vertical axi..
Identify which of the following are oxidation-reduction reactions, and if they are, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced.
Prepare an electrochemical cell by connecting the negative terminal of a voltmeter to a strip of zinc in a solution of 0.500 M ZnCl2(aq) and the positive terminal to a strip of copper in a solution of 0.100 M CuCl2(aq). The two half-cells are conn..
Calculate the binding energy (in J) and the nuclear binding energy per nucleon of 107- 47 Ag (106.9051 amu). a. nuclear binding energy in J
In some cases a Br-Br bond can be broken by the absorption of photons of light energy. Br-Br bond energy is 192 kj/mol determine the photon energy and the wavelength (in nanometers) associated with breaking this bond.
The heat of vaporization of water at this temperature is 574 cal/g. We normally do not sweat this much. Explain what is wrong with this calculation?
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