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2Fe(s) + O2(g) => 2FeO(s) ?H = -544.0 kJ 4Fe(s) + 3O2(g) => 2Fe2O3(s) ?H = -1648.4 kJ Fe3O4(s) => 3Fe(s) + 2O2(g) ?H = +1118.4 kJ Given the data above, determine the heat of reaction, ?H, for the reaction below: Reaction: Fe2O3(s) + FeO(s) => Fe3O4(s)
Calculate the equilibrium constant, K, for this reaction at 298 K. (b) Will Delta G increase, decrease, or stay the same if the partial pressure of NO2 is increased? (c) Calculate Delta G^o at 298K if the partial pressure of NO2 and N2O4 are 0.40 atm..
How many hydrogen bonds exist per full turn of the alpha helix? What is the rise in angstrom? Can these be different in different alpha helices? Explain.
How many equivalents of electrons were delivered to the unknown soln? What is the normality of the unknown solution?
what is the concentration of ammonia in a solution if 20.75ml of a .1130M solution of HCl are needed to titrate 100.0mL of that solution
Earth's oceans have an average depth of 38000m, a total area of 3.63*10^8km^2, and an average concentration of dissolved gold of 5.8*10^-9g/L. a) how many grams of gold are in the oceans?
how many grams of sodium benzoate should be added to prepare the buffer?
What NaCl concentration results when 234 mL of an 0.640 M NaCl solution is mised with 6.52 mL of a 0.450 M NaCl solution
Consider the following observations taken on successive, cloudless autumn mornings. On the first day, a considerable amount of frost is on the grass at sunrise. On the second day, only dew appears on the grass. On which day is the temperature incr..
What determines whether two substances are likely to be miscible with each other, in terms of thermodynamic and intermolecular forces
Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
the electron-state H atom absorbs a photon of wavelength 93.78 nm. To what energy level does the
An appropriate indicator is used. Ka for acetic acid is 1.7x10^-5. Calculate the pH in the flask after 300 mL of 0.100 M NaOH has been added
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