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By using appropriate thermochemical data from Appendix C (heats of formation), calculate the average bond enthalpies in the liquid state for the following bonds a) Br---Br from Br2 (l)b) C--Cl from CCl4 (l)c) O--O from H2O2 (l) assuming that the O--H bond enthalpy is the same as in the gas phase. d) what can you conclude about the process of breaking bonds in the liquid as compared to the gas phase? Explain the difference in the heat of formation values between the two phases
write the equations involved in the following
What proportion of 3-phosphoglycerate will carry 14C after five enzymatic turnovers (five equivalents of CO2 are fixed) if purified active
Determine how much dolomitic lime(is an anhydrous carbonate mineral composed of calcium magnesium carbonate CaMg(CO 3 ) 2 ) is required to apply to raise the pH to 7.0?
A 1L flask is filled with 0.25 mol N2and 0.65 mol H2 at 20 oC. These gases react to make NH3, heating up the flask to a temperature of 45 oC.
a sample contains 67.0% of the R isomer and 33.0% of its enantiomer, what is the observed specific rotation of the mixture?
if 0.100 m NaCl is added slowly to a beaker containing both .120m AgNO3 and .150m Pb(NO3)2 at 25 celsius which will precipitate first AgCl or PbCl2?
Certain sunglasses have small crystals of silver chloride (AgCl) incorporated in the lenses. When the lenses are exposed to light of the appropriate wavelength, the following reaction occurs:AgCl->Ag + Cl.
Calculated what is the pressure in atm using the van der Waals' equation for Oxygen gas under these conditions? For O 2 , it is given a = 1.360 L2atm/mol2 and b = 3.183E-2 L/mol.
Suppose your thermometer read consistently 1.0 o C lowered throughout both parts in the colligative properties lab. What effect would that have on your experimental value for the molar mass of your unknown solute?
how many grams of iron will react with water to form iron (III)oxide and 85 liters of hydrogen gas at 19 degrees celsius & 525 torr?
A an aqueous methanol (CH3OH) solution has a mole fraction of 0.430 of methanol. What mass of water would be present in 706 g of this solution?
calculate the mass, in grams, at 25 degrees celcius of 30.0mL of propylene glycol, which has a density of 1.036g/mL
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