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Fermentation of glucose produces ethyl alcohol and carbon dioxide; C6H12O6(l) ? 2 C2H5OH(l) + 2 CO2(g) What is ?H°rxn (in kilojoules) if 385.3 mL of CO2 was collected over water at 20.00°C and 761.2 mm Hg? The vapor pressure of water at this temperature is 17.54 mm Hg. Species ?H°f, kJ/mol C6H12O6(l) -1260 C2H5OH(l) -277.7 CO2(g) -393.5
Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone.
If the density of the vinegar solution is 1.00 g?mL, what is the mass percent of acetic acid present?
Calculate the energy produced when 15 grams of liquid methanol (CH3OH) is completely burnt in air to produce carbon dioxide gas
what is the balanced equation of the ostwald process and is it exothermic or
Estimate the value of the equilibrium constant at 685 K for each of the following reactions. Delta H and S for BrCl(g) is 14.6 kJ/mol and 240.0 J/ mol * K, respectively. 2 NO_2(g) > N_2O_4(g.
The attractive force between neighboring dipoles. the force that arises because of the large differences in electronegativities in the N-H bonds
The equilibrium constant, Kp, for the following reaction is 9.4 at 500.0 degrees C. A mixture in a container at this temperature has a total pressure of 2.0 atm. The molar percent of N2O4 is 12.0% and NO2 is 88.0%.
What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?
Compute the heat amount required to heat a 3.9kg gold bar from 28 degree Celsius to 68 degree Celsius. Given Specific heat capacity of gold = 0.128 J/g°C.
You need to produce a buffer solution that has a pH of 5.10. You already have a solution that contains 10 mmol (millimoles) of acetic acid.
"Air" bags for automobiles are inflated during a collision by the explosion of sodium azide, NaN3. The equation for the decomposition is 2NaN3(s) ? 2Na(s) + 3N2(g). What mass of sodium azide would be needed to inflate a 9.8-L bag to a pressure of 2...
An ideal gas in a sealed container has an initial volume of 2.50 L. At constant pressure, it is cooled to 24.00 C where its final volume is 1.85 L. What was the initial temperature
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