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The reaction that was on the screen when you started and its derivative demonstrate that the change in enthalpy for a reaction, Delta H, is an extensive property. Using this property, calculate the change in enthalpy for Reaction 2. Reaction 1: C3H8 (g) +5 O2(g)==> CO2(g) + 4 H2O(g), Delta H1 = -2043 kJ Reaction 2: 4C3H8 (g) +20O2(g) ==>12CO2(g) + 16H2O(g), Delta H2 = ?
Determine what would be the concentration of the final solution If you take a ten mili litres portion of the stock solution and dilute it to a total volume of 0.250 Litres,?
How many milliliters of a 235 mL solution of 1.5 M AlCl3 must be used to make 61 mL of a solution that has a concentration of 0.5 M Al3+?
Examine the nuclide neptunium-237. The nuclide has a measured nuclear mass of 237.048166 amu. Determine the binding enery in kj, kj/mole
Identify the group of elements that corresponds to the following generalized electron configuration: [noble gas]ns^2(n-2)f^6?
one cup is equivalent to 237 cm^3. In 1 cup of oil has a mass of 216 g. What is the density of olive oil in g/cm^3
Niobium (Nb) has a BCC cubic crystal structure, and an atomic radius of 0.144 nm. a) Calculate the edge length (d) of a niobium unit cell:
Construct a spontaneous voltaic cell using the following materials: A Ni(s) electrode, a copper electrode, a 1.0 M Ni(NO3) (aq) solution and a 1.0 M CuSO4 (aq) solution.
Find the Net Iconic Equations for these Chemical Reactions- a. Cu+4HNO3(aq)= Cu (NO3)2 (aq)+2NO2(g)+2H2O(l) b. Cu(NO3)2(aq)+2NaOH(aq)=Cu(OH)2(s)+2NaNO3(aq)
Total heat evolved by the reaction by adding the heats required to raise both the solution and the calorimeter to the maximum temperature. 5). Heat evolved per mole of Mg 6) Change in enthalpy for the following specific reaction. Be sure to indica..
If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
A particular dye solution has an absorbance of 0.984 in a 2.0-cm pathlength cuvette. When the same solution is placed in another cuvette, it has an absorbance of 0.652. What is the pathlength of the second cuvette
After you have made your observations, you can release the vacuum and allow the pressure inside to return to atmospheric pressure. Do this by removing the pumper and squeezing the rubber septum as indicated.
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