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11.8 At three different temperatures T1, T2, T3, and the molecules in a liquid crystal align in these ways:
(a) At which temperature or temperatures is the substance in a liquid crystalline state? At those temperatures, which type of liquid crystalline phase is depicted?
(b) Which is the highest of the three temperatures?
a weather balloon at earths surface has a volume of 4 l at 285 k and 791 mmhg. if the balloon is released and the
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
If 35.0 g H2O at 22.7 °C is combined with 65.0 g H2O at 87.5 °C, what is the final temperature of the mixture. The specific heat capacity of water is 4.184 J/g×K.
Compute the concentration (in molarity) of a NaOH solution if 35.0 mL of the solution are needed to neutralize 12.0 mL of a 0.312MHCl solution
a 36 gram sample of copper at 99.8 c is dropped into a beaker containing 207 grams of water at 18.5 c. what is the
Standard Electrode Potential (E), a) Write the equation for the cell reaction and indicate cathode and anode half-cells for the electrochemical cell formed from Mg/Mg2+ half-cell and In/In3+ half-cell.
Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C. (show all work)
What would be the expected mass of the cooled dehydrated salt?
A sample of commercial concentrated hydrochloric acid is 11.8M HCl and has a density of 1.190 g/mL. Calculate the mass % , molality and mole fraction of HCl.
A titration was performed to determine the solubility product constant (Ksp) of an unknown iodide with formula . The first two steps of the reaction sequence are shown below:
Describe what happens in a fission reaction. What is a commonly used isotope in a nuclear fission reactor? Describe how a fission nuclear reactor power plant works.
In each of the following reactions, identify the acids and bases as well as classify them as Arrhenius or Lowry-Bronsted or Lewis acid-base reactions. Some reactions may fall under more than one category
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