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A body of constant heat capacity Cp and at a temperature Ti is put in contact with a reservoir at a higher temperature Tf.
The pressure remains constant while the body comes to equilibrium with the reservoir. Show that the entropy change of the universe is equal toΔS = Cp[x - ln(1+x)];where x = -(Tf - Ti)/Tf. Prove that the entropy change is positive.
Presume some HO2 with a preliminary concentration of 2.0 × 10-8M could be confirmed at 25 °C. Compute the concentration that would remain after 1.0 s, presuming no other reactions take place.
The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×1..
Calculate the volume of 0.460 M radium hydroxide solution required to completely neutralize 10.00 mL of 1.17 M phosphoric acid
Consider the process of combustion, of complete oxidation -- that is, reaction with oxygen resulting in the conversion of every carbon atom to CO2.
Consider a molecule with spacing between two energy levels of 0.250 kJ mol-1. Calculate the wavelength and wavenumber of the photon that would be needed to lead to an excitation between these two levels.
What is the dominant intermolecular force or bond that must be overcome in converting CO2 from a liquid to a gas? Which of the following compounds is expected to have the strongest ionic bonds?
determine K for this reaction When a sample of 5.63 grams of pure C 5 H 6 O 3 (g) was sealed into an otherwise empty flask of 2.50 L and heated to 200.
A buffer that is 0.210 M in acid, HA, and 0.172 M in the potassium salt of its conjugate base, KA, has a pH of 4.66. What is the pH of the buffer after 150. mL of 0.359 M LiOH is added to 0.950 L of this buffer? Assume that the volumes are additiv..
In the technique of electron impact mass spectroscopy, molecular fragment are identified through a characteristic pattern of peaks at different values of m/z
How many grams of NaH2PO4 are needed to react with 43.74 mL of 0.285 M NaOH by the following reaction- NaH2PO4(s) + 2 NaOH(aq) --> Na3PO4(aq) + 2 H2O(l)
how long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added
Both iodide ion and chloride ion are in the test solution. Describe the appearance of the contents of the test tube after drops of 0.01 M Agano3 have been added and the solution has been centifuged.
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